The OT laws are typically a topic that comes up in most Bible forums.
And the confusion and contention that often follows surprises me, because the Word very succinctly addresses this issue for NT believers. We are freed from the curse of the Law by the Blood of Jesus. That is what the Gospel is all about. We live in Christian liberty once we are come under the Blood...
Galatians
3:11 But that no man is justified by the law in the sight of God, [it is] evident: for, The just shall live by faith.
3:12 And the law is not of faith: but, The man that doeth them shall live in them.
3:13
Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Cursed [is] every one that hangeth on a tree:
3:14 That the blessing of Abraham might come on the Gentiles through Jesus Christ; that we might receive the promise of the Spirit through faith.
Our commands are now summarized into just two...
Matthew
22:37 Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind.
22:38 This is the first and great commandment.
22:39 And the second [is] like unto it, Thou shalt love thy neighbour as thyself.
The Law still has a purpose and place, but no longer condemns those who are alive in Christ...
Galatians
3:19 Wherefore then [serveth] the law? It was added because of transgressions, till the seed should come to whom the promise was made; [and it was] ordained by angels in the hand of a mediator.
3:20 Now a mediator is not [a mediator] of one, but God is one.
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.
3:22 But the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe.
3:23 But before faith came, we were kept under the law, shut up unto the faith which should afterwards be revealed.
3:24 Wherefore the law was our schoolmaster [to bring us] unto Christ, that we might be justified by faith.
3:25 But after that faith is come, we are no longer under a schoolmaster.
3:26 For ye are all the children of God by faith in Christ Jesus.
3:27 For as many of you as have been baptized into Christ have put on Christ.
3:28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.
3:29 And if ye [be] Christ's, then are ye Abraham's seed, and heirs according to the promise.