Yes I have tried to tell you that we are redeemed from the law of sin and death through Christ.
That does not mean we cannot learn from the law as our schoolmaster.
Quotes from the law has nothing to do with the tithe,
Tithes were established prior to the law.
Galatians: 3. 21. Is the law then against the promises of God? God forbid: for if there had been a law given which could have given life, verily righteousness should have been by the law. 22. But the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe. 23. But before faith came, we were kept under the law, shut up unto the faith which should afterwards be revealed. 24. Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith. 25. But after that faith is come, we are no longer under a schoolmaster.
Genesis: 28. 14. And thy seed shall be as the dust of the earth, and thou shalt spread abroad to the west, and to the east, and to the north, and to the south: and in thee and in thy seed shall all the families of the earth be blessed. 15. And, behold, I am with thee, and will keep thee in all places whither thou goest, and will bring thee again into this land; for I will not leave thee, until I have done that which I have spoken to thee of. 16. And Jacob awaked out of his sleep, and he said, Surely the LORD is in this place; and I knew it not. 17. And he was afraid, and said, How dreadful is this place! this is none other but the house of God, and this is the gate of heaven. 18. And Jacob rose up early in the morning, and took the stone that he had put for his pillows, and set it up for a pillar, and poured oil upon the top of it. 19. And he called the name of that place Bethel: but the name of that city was called Luz at the first. 20. And Jacob vowed a vow, saying, If God will be with me, and will keep me in this way that I go, and will give me bread to eat, and raiment to put on, 21. So that I come again to my father's house in peace; then shall the LORD be my God: 22. And this stone, which I have set for a pillar, shall be God's house: and of all that thou shalt give me I will surely give the tenth unto thee.
Where does God say this has been changed?
We are joint heirs to the promise of God to Abraham it is a everlasting covenant, if not then the promise of the Messiah would be void as well.
God does not break a covenant, but man surely will.