Grandpa was referring to the vail Moses wore over his face because his face shined. The vail symbolizes the administration of the law which is done away in Christ.
Seeing then that we have such hope, we use great plainness of speech: And not as Moses, [which] put a vail over his face, that the children of Israel could not stedfastly look to the end of that which is abolished: But their minds were blinded: for until this day remaineth the same vail untaken away in the reading of the old testament; which [vail] is done away in Christ. But even unto this day, when Moses is read, the vail is upon their heart. Nevertheless when it shall turn to the Lord, the vail shall be taken away. Now the Lord is that Spirit: and where the Spirit of the Lord [is], there [is] liberty. But we all, with open face beholding as in a glass the glory of the Lord, are changed into the same image from glory to glory, [even] as by the Spirit of the Lord. 2 Corinthians 3:12-18
There's the 4th and 5th places it's mentioned that the law is abolished/done away (καταργέω).
I think you twist Paul's words into Lawlessness;
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2 Peter/Kepha 3:15-17, "and reckon the patience of our Master as deliverance, as also our beloved brother Paul/Sha’ul wrote to you, according to the wisdom given to him, as also in all his letters, speaking in them concerning these matters, in which some are hard to understand, which those who are untaught and unstable twist to their own destruction, as they do also the other Scriptures. You, then, beloved ones, being forewarned, watch, lest you also fall from your own steadfastness, being led away with the delusion of the lawless, but grow in the favor and knowledge of our Master and Savior [/FONT][FONT=Times New Roman, serif]
יהושע [/FONT][FONT=Times New Roman, serif]
Messiah. To Him be the esteem both now and to a day that abides. Awmiĕn.”[/FONT]
Yahshua makes it clear:
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Mat 5:18, "I say to you; Unless heaven and earth passes away, one yodh; the smallest of the letters will in no way pass from the Law, until all things are perfected."
Revelation 21:1, "I saw a new heaven and a new earth, for the first heaven and the first earth had passed away." [/FONT]
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Mat 22:37-40, "Yahshua said to him: You must love YHWH your Father with all your heart, and with all your soul, and with all your might. (Deut 6:5) This is the first and greatest commandment. And the second is like it: You shall love your neighbor as yourself. (Lev 19:18) On these two commandments hang all the Law and the Prophets."[/FONT]
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Mat 24:35, “Heaven and earth may pass away, but My teachings will not pass away.”[/FONT]
and the "veil" is the enactment of the Levite priesthood, it is explaine in Hebrews as I showed before and here:
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Hebrews 7:13, “For He of whom this is said belongs to another tribe, from which no one had attended at the Altar. For it is perfectly clear that our Master arose from Yehuḏah, a tribe about which Mosheh never spoke of concerning priesthood.”[/FONT]
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Hebrews 7:11-12, “Now if perfection had been attainable through the Levitical priesthood (for under it the people received the law), what further need would there have been for another priest to arise after the order of Melchizedek, rather than one named after the order of Aaron? For the priesthood being changed (#G3331), there is made of necessity a change (#G3346) also of the law.”[/FONT]
“[FONT=Times New Roman, serif]For the priesthood being changed (#G3331)”[/FONT]
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changed” is word #G3331 μετάθεσις metathesis (me-ta'-the-sis) n., transposition, i.e. transferral (to heaven), disestablishment (of a law). [from G3346], KJV: change, removing, translation, Root(s): G3346 [/FONT]
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Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)[/FONT]
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#G3331 μετάθεσις metathesis; 1) transfer: from one place to another 2) to change 2a) of things instituted or established[/FONT]
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As in the priesthood on earth, the Levite priesthood has been abolished, and the Priesthood in the heavens, carried out by Yahshua is established. This “change” or “metathesis” is a removal of one that is replaced by another.[/FONT]
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there is made of necessity a change (#G3346) also of the law.”[/FONT]
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Thayer's (New Testament Greek-English Lexicon)[/FONT]
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From G3346; transposition, that is, transferral (to heaven), disestablishment (of a law):—change, removing, translation.[/FONT]
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change” is word #G3346 μετατίθημι metatithemi (me-ta-tiy'-thee-miy) v., 1. to transfer., 2. (literally) to transport., 3. (by implication) to exchange., 4. (reflexively) to change sides. [from G3326 and G5087], KJV: carry over, change, remove, translate, turn, Root(s): G3326, G5087[/FONT]
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Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)[/FONT]
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#G3346 μετατίθημι metatithemi; 1) to transpose (two things, one of which is put in place of the other) 1a) to transfer 1b) to change 1c) to transfer one's self or suffer one's self to be transferred 1c1) to go or pass over 1c2) to fall away or desert from one person or thing to another[/FONT]
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Thayer's (New Testament Greek-English Lexicon)[/FONT]
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#G3346 μετατίθημι metatithemi; From G3326 and G5087; to transfer, that is, (literally) transport, (by implication) exchange, (reflexively) change sides, or (figuratively) pervert:—carry over, change, remove, translate, turn.[/FONT]
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As in the Law has been transferred, not mediated by Levites but mediated by Yahshua the High Priest. This “change” or “metatithemi” is a transferral.[/FONT]
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John/Yahanan 14:6, “Yahshua proclaimed to him: I am the way, the truth, and the life; no man comes to the Father, except through Me.”[/FONT]
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Hebrews 7:24-25,"but He, because He remains forever, has an unchangeable priesthood. Therefore He is also able to save completely those who draw near to [/FONT][FONT=Times New Roman, serif]
יהוה [/FONT]
[FONT=Times New Roman, serif]through Him[/FONT][FONT=Times New Roman, serif]
, ever living to make intercession for them."
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2 Corinthians 3:12-16, “Having then such expectation, we use much boldness of speech, and not like Mosheh, who put a veil over his face so that the children of Yisra’yl should not look steadily at the end of what was passing away. (Exo 34:33-35) But their minds were hardened, for to this day, when the old covenant is being read, that same veil remains, not lifted, because in Messiah it is taken away. But to this day, when Mosheh is being read, a veil lies on their heart. And when one turns to the Master, the veil is taken away.”[/FONT]
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Matthew 27:50-52, “And [/FONT][FONT=Times New Roman, serif]
יהושע [/FONT][FONT=Times New Roman, serif]
cried out again with a loud voice, and gave up His spirit. And see, the veil of the Dwelling Place was torn in two from top to bottom, and the earth was shaken, and the rocks were split, and the tombs were opened, and many bodies of the set-apart ones who had fallen asleep were raised.”[/FONT]
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Hebrews 9:24-25, “For Messiah has not entered into a Set-apart Place made by hand – figures of the true – but into the heaven itself, now to appear in the presence of [/FONT][FONT=Times New Roman, serif]
יהוה [/FONT][FONT=Times New Roman, serif]
on our behalf, not that He should offer Himself often, as the high priest enters into the Set-apart Place year by year with blood not his own.”[/FONT]
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Hebrews 10:19-21, “So, brothers, having boldness to enter into the Set-apart Place by the blood of [/FONT][FONT=Times New Roman, serif]
יהושע[FONT=Times New Roman, serif]
, by a new and living way which He instituted for us, through the veil, that is, His flesh, and having a High Priest over the House of [/FONT][/FONT][FONT=Times New Roman, serif]
יהוה[/FONT][FONT=Times New Roman, serif]
.”[/FONT]
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John 14:6, "[/FONT][FONT=Times New Roman, serif]
יהושע [/FONT][FONT=Times New Roman, serif]
said to him, “I am the Way, and the Truth, and the Life. No one comes to the Father except through Me."[/FONT]
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Exodus 30:1-10, “And you shall make a sacrifice altar to burn incense on, make it of acacia wood, a cubit long and a cubit wide – it is a square – and two cubits high, its horns of the same. And you shall overlay its top, and its sides all around, and its horns with clean gold. And you shall make for it a molding of gold all around. And make two gold rings for it, under the molding on both its sides. Make them on its two sides, and they shall be holders for the poles to lift it with. And you shall make the poles of acacia wood, and overlay them with gold." And you shall put it before the veil that is before the ark of the Witness, before the lid of atonement that is over the Witness, where I am to meet with you. And Aharon shall burn on it sweet incense, morning by morning. As he tends the lamps, he shall burn incense on it. And when Aharon lights the lamps between the evenings, he shall burn incense on it – a continual incense before [/FONT][FONT=Times New Roman, serif]
יהוה [/FONT][FONT=Times New Roman, serif]
throughout your generations. Do not offer strange incense on it, or an ascending offering, or a grain offering, and do not pour a drink offering on it. And Aharon shall make atonement upon its horns once a year with the blood of the sin offering of atonement – once a year he makes atonement upon it throughout your generations. It is most set-apart to [/FONT][FONT=Times New Roman, serif]
יהוה[/FONT][FONT=Times New Roman, serif]
.”"[/FONT]
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Acts 7:48-49, “However, the Most High does not dwell in dwellings made with hands, as the prophet says: ‘The heaven is My throne, and earth is My footstool. What house shall you build for Me? says [/FONT][FONT=Times New Roman, serif]
יהוה[/FONT][FONT=Times New Roman, serif]
, or what is the place of My rest?”[/FONT]
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Hebrews 9:11-12, “But Messiah, having become a High Priest of the coming good matters, through the greater and more perfect Tent not made with hands, that is, not of this creation, entered into the Most Set-apart Place once for all, not with the blood of goats and calves, but with His own blood, having obtained everlasting redemption.”[/FONT]
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Hebrews 10:16, “This is the covenant that I will make with them after those days, says YHWH: I will put My Law into their hearts, and in their minds I will write them.”[/FONT]
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Hebrews 9:1-28, “Now the first covenant indeed had regulations of worship and the earthly set-apart place. For a Tent was prepared: the first part, in which was the lamp-stand, and the table, and the show-bread, which is called the Set-apart Place. And after the second veil, the part of the Tent which is called Most Set-apart, to which belonged the golden censer, and the ark of the covenant overlaid on all sides with gold, in which were the golden pot that held the manna, and the rod of Aharon that budded, and the tablets of the covenant, and above it the keruḇim of esteem were overshadowing the place of atonement – about which we do not now speak in detail. And these having been prepared like this, the priests always went into the first part of the Tent, accomplishing the services. But into the second part the high priest went alone once a year, not without blood, which he offered for himself and for sins of ignorance of the people, the Set-apart Spirit signifying this, that the way into the Most Set-apart Place was not yet made manifest while the first Tent has a standing, which was a parable for the present time in which both gifts and sacrifices are offered which are unable to perfect the one serving, as to his conscience, only as to foods and drinks, and different washings, and fleshly regulations imposed until a time of setting matters straight. But Messiah, having become a High Priest of the coming good matters, through the greater and more perfect Tent not made with hands, that is, not of this creation, entered into the Most Set-apart Place once for all, not with the blood of goats and calves, but with His own blood, having obtained everlasting redemption. For if the blood of bulls and goats and the ashes of a heifer, sprinkling the defiled, sets apart for the cleansing of the flesh, how much more shall the blood of the Messiah, who through the everlasting Spirit offered Himself unblemished to the Mighty One, cleanse your conscience from dead works to serve the living Mighty One? And because of this He is the Mediator of a renewed covenant, so that, death having taken place for redemption of the transgressions under the first covenant, those who are called might receive the promise of the everlasting inheritance."9:16, "For where a covenant is, it is necessary for the death of the covenanted one to be established."9:17, "For a covenant over those dead is firm, since it is never valid while the covenanted one is living."9:18, "Therefore not even the first covenant was instituted without blood."9:19, "For when, according to Torah, every command had been spoken by Mosheh to all the people, he took the blood of calves and goats, with water, and scarlet wool, and hyssop, and sprinkled both the book itself and all the people,"9:20, "saying, “This is the blood of the covenant which the Mighty One commanded you.” Exo 24:8."9:21, "And in the same way he sprinkled with blood both the Tent and all the vessels of the service."9:22, "And, according to the Torah, almost all is cleansed with blood, and without shedding of blood there is no forgiveness."9:23, "It was necessary, then, that the copies of the heavenly ones should be cleansed with these, but the heavenly ones themselves with better sacrifice offerings than these."9:24, "For Messiah has not entered into a Set-apart Place made by hand – figures of the true – but into the heaven itself, now to appear in the presence of the Mighty One on our behalf,"9:25, "not that He should offer Himself often, as the high priest enters into the Set-apart Place year by year with blood not his own."9:26, "For if so, He would have had to suffer often, since the foundation of the world. But now He has appeared once for all at the end of the ages to put away sin by the offering of Himself."9:27, "And as it awaits men to die once, and after this the judgment,"9:28, "so also the Messiah, having been offered once to bear the sins of many, Isa 53:12 shall appear a second time, apart from sin, to those waiting for Him, unto deliverance."[/FONT]