Here is How to Make Sure Your Calling and Election.

2 Peter 1:10
Wherefore, brethren, labour the more, that by good works you may make sure your calling and election. For doing these things, you shall not sin at any time.

Oh that htis blessing and will would fill me always, amen. Thank you for the admonition and edification…….

Now there is a stand-alone verse that needs some clarification if ever there was one, as it seems an easy verse to misinterpret, ~especially~ in that translation in this particular case (Douay-Rheims).

Here is the preceding context for anyone who might be interested:

2 Peter 1
1 Simon Peter, a servant and apostle of Jesus Christ, to those who through the righteousness of our God and Saviour Jesus Christ have received a faith as precious as ours:
2 Grace and peace be yours in abundance through the knowledge of God and of Jesus our Lord.
3 His divine power has given us everything we need for life and godliness through our knowledge of Him who called us by His own glory and goodness.
4 Through these He has given us His very great and precious promises, so that through them you may participate in the divine nature having escaped the corruption in the world caused by evil desires.
5 For this very reason, make every effort to add to your faith goodness; and to goodness, knowledge;
6 and to knowledge, self-control; and to self-control, perseverance; and to perseverance, godliness;
7 and to godliness, brotherly kindness; and to brotherly kindness, love.
8 For if you possess these qualities in increasing measure, they will keep you from being ineffective and unproductive in your knowledge of our Lord Jesus Christ.
9 But if anyone does not have them, he is short-sighted and blind, and has forgotten that he has been cleansed from his past sins.
10 Therefore, my brothers, be all the more eager to make your calling and election sure. For if you do these things, you will never stumble.

~Deut

What translation are you using?

Thank you for making me look......passted below are several assorted verions of this one line which precede more worthy to be included.

2Pe 1:10
(ABP+) ThereforeG1352 rather,G3123 brethren,G80 hurryG4704 [6firmG949 2yourG1473 G3588 3callingG2821 4andG2532 5selectionG1589 1to make]!G4160 for these things G3778 G1063 doing,G4160 in no wayG3766.2 should you failG4417 at some time or other.G4218
(ASV) Wherefore, brethren, give the more diligence to make your calling and election sure: for if ye do these things, ye shall never stumble:
(CEV) My friends, you must do all you can to show that God has really chosen and selected you. If you keep on doing this, you won't stumble and fall.
(Darby) Wherefore the rather, brethren, use diligence to make your calling and election sure, for doing these things ye will never fall;
(DRB) Wherefore, brethren, labour the more, that by good works you may make sure your calling and election. For doing these things, you shall not sin at any time.
(FDB) C'est pourquoi, frères, étudiez-vous d'autant plus à affermir votre vocation et votre élection, car en faisant ces choses vous ne faillirez jamais;
(FLS) C'est pourquoi, frères, appliquez-vous d'autant plus à affermir votre vocation et votre élection; car, en faisant cela, vous ne broncherez jamais.
(HNT) לכן אחי הוסיפו ושקדו לחזק את־קריאתכם ובחירתכם (במעשים טובים) כי אם כן תעשו לא תכשלו׃
(INR) Perciò, fratelli, impegnatevi sempre di più a render sicura la vostra vocazione ed elezione; perché, così facendo, non inciamperete mai.
(IRL) Perciò, fratelli, vie più studiatevi di render sicura la vostra vocazione ed elezione; perché, facendo queste cose, non inciamperete giammai,
(ISV) So then, my brothers, be all the more eager to make your calling and election certain, for if you keep on doing this you will never fail.
(KJV) Wherefore the rather, brethren, give diligence to make your calling and election sure: for if ye do these things, ye shall never fall:
(KJV+) WhereforeG1352 the rather,G3123 brethren,G80 give diligenceG4704 to makeG4160 yourG5216 callingG2821 andG2532 electionG1589 sure:G949 forG1063 if ye doG4160 these things,G5023 ye shall neverG3364 G4218 fall:G4417
(ROB) Pentru aceea, fraţilor, siliţi-vă cu atât mai vârtos să faceţi temeinică chemarea şi alegerea voastră, căci, făcând acestea, nu veţi greşi niciodată.
(SSE) Por lo cual, hermanos, procurad tanto más de hacer firme vuestra vocación y elección; porque haciendo estas cosas, no caeréis jamás.
(TKK) Bunun için, ey kardeşler, çağrılmışlığınızı ve seçilmişliğinizi kökleştirmeye daha çok gayret edin. Bunları yaparsanız, hiçbir zaman tökezlemezsiniz.
(Vulgate) quapropter fratres magis satagite ut per bona opera certam vestram vocationem et electionem faciatis haec enim facientes non peccabitis aliquando
(Webster) Wherefore the rather, brethren, give diligence to make your calling and election sure: for if ye do these things, ye shall never fall:
(WNT) For this reason, brethren, be all the more in earnest to make sure that God has called you and chosen you; for it is certain that so long as you practise these things, you will never stumble.

The Douay-Rheims was used in the OP.

After rereading it makes perfect sense to me. It is like if we are completely obedient we will sin no more. Of course only Jesus Christ is so, therefore by Him we are perfected but not completed yet in this age.

I think I know how this came about and thank you again.