But, in the OT there was no forgiveness of sins ( they were only covered and not forgiven). In the NT Christ willingly died on the cross for our sins. Thats why Job said " I know my redeemer liveth". We need a redeemer and the law could not provide it., In fact the only thing law did was reveal ans condemn our sin and provided no remedy for it. Keeping this or that did nothing. Even if you kept it all you still had to rely on a priest to offer the blood of the lamb on the mercy seat for your sins to be covered and Not forgiven. Why do you think that the OT saints longed for the cross of Christ?
Animal blood did noting, it was a place holder. Looking forward to the reason sacrificial Law was invented in the first place.
How is this a testament against the rest of Yahweh's Law?
Ezekiyl 18:20-28, "20 The soul that sins, it will die. The son will not bear the iniquity of the father, nor will the father bear the iniquity of the son. The righteousness of the righteous will be upon himself, and the wickedness of the wicked will be upon himself. But if the wicked will turn from all his sins that he has committed, and keep all My statutes, and do that which is Lawful and right, then he will surely live; he will not die. And his transgressions that he has committed will not be mentioned against him; in his righteousness that he has done, he will live. Do I have any pleasure at all that the wicked should die? says Father Yahweh: No, but rather that he would turn back from his wicked ways, and live. But when the righteous turns away from his righteousness and commits iniquity, and does according to all the abominations that the wicked man does--should he live? All his righteousness that he has done will not be mentioned in his behalf. In his trespass that he has trespassed, and in his sin that he has sinned, in them he will die. Yet you say; The way of Yahweh is not equal. Hear now, O house of Israyl: Is not My way equal? Are not your ways unequal? When a righteous man turns away from his righteousness, and commits iniquity and dies, it is because of the iniquity he has done, that he will die. Again, when the wicked man turns away from his wickedness that he has committed, and does that which is Lawful and right, he will save himself, and live. Because he considered, and turned away from all his transgressions that he has committed, he will surely live; he will not die."
Romans 2:12, "For as many as have sinned without the Law, will also perish without the Law, and as many as have sinned in the Law, will be judged by the Law."
Mattithyah 16:27, “For the Son of Man will come in the glory of His Father with His Malakim; and then He will reward every man according to his works.”
Yahchanan (John) 5:28-30, “Do not be astonished at this-for the hour is coming in which all who are in the graves will hear His voice, and will come forth. Those who have practiced righteousness will be resurrected in order to live; and those who have practiced wickedness will be resurrected in order to be damned."
Acts 17:30-31, “In the past Yahweh winked at such ignorance, but now He commands all men everywhere to repent! For He has appointed a day in which He will judge the world in righteousness, by a Man whom He has ordained; and He has given evidence to everyone by raising Him from the dead.”
Leviticus 20:7-8, "Consecrate and sanctify yourselves therefore, and be holy, for I am Yahweh your Father. You must therefore keep My statutes, and perform and do them; I am Yahweh Who consecrates and sanctifies you."
Deuteronomy 6:25, "And it will be OUR RIGHTEOUSNESS, if we observe to
do all of this Law before Yahweh our Father, as He has commanded us."
1 Yahchanan 3:7, "Little children, let no man deceive you; he who practices righteousness is righteous, just as He is righteous."
Yahchanan (John) 5:28-30, “Do not be astonished at this-for the hour is coming in which all who are in the graves will hear His voice, and will come forth. Those who have practiced righteousness will be resurrected in order to live; and those who have practiced wickedness will be resurrected in order to be damned."
Acts 17:30-31, “In the past Yahweh winked at such ignorance, but now He commands all men everywhere to repent! For He has appointed a day in which He will judge the world in righteousness, by a Man whom He has ordained; and He has given evidence to everyone by raising Him from the dead.”
2 Corinthians 5:10, “For we must all appear before the judgment seat of Messiah, that each one may receive his reward according to what he has done in the body, whether righteous or evil.”
Revelation 22:12, “And behold, I come quickly, and My reward is with Me, to give every man according as his work will be.”
Yaaqob (James) 2:26, “For just as the body without the spirit is dead, so the faith without works is dead also.”
2 Timothy 4:3-4, “For the time will come when they will not endure sound doctrine, but after their own lusts they will heap to themselves teachers, who will tickle their ears, and they will turn away their ears from the truth, and be turned to fables.”