Mat 5:17 Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
Mat 5:18 For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
The Bible says that the 2 greatest commandments are love God,and love people,and on those two laws hang all the prophets,and the law.
Jesus said a new commandment I give you,that you love one another as I have loved you,and that is how they will know you are my disciples,if you have love for one another.
The Bible says love works no ill towards their neighbor;therefore love is the fulfilling of the law.
Paul said if he did not have love he is nothing,and love does not think an evil thought,and does not rejoice in iniquity,but rejoices in the truth.
The Bible says a Spirit led life will not fulfill the lust of the flesh,and shows the characteristics of the Spirit,and they have crucified the flesh with the affections and lusts.
If a person hates sin,does not want sin,and wants to represent goodness,by the Spirit they can do it,because they will not show the ways of the flesh,but of the Spirit,and when they are tempted,God will not put on them more than they are able,so they can endure it,and will give them an escape from the temptation.
Those that name the name of Christ depart from iniquity.
Lay aside every weight of sin that so easily besets us,and abstain from fleshy lusts,that war against the soul.
The Bible says that Jesus took the physical ordinances of Israel out of the way,nailing them to His cross,for they were contrary to us,because they did not have any bearing on spiritual salvation,therefore let no person judge you concerning the physical ordinances,and that is because a person does not have to keep them,and the body is of Christ.
Paul said we do not void out the law through faith,but we establish the law,and the law is spiritual,holy,just,and good,which Paul is talking about the laws of love,moral laws,which the ten commandments is laws of love towards God,and people.
The 2 greatest commandments love God,and love people,and on those 2 laws hang all the prophets,and the law,and loving people is the fulfilling of the law,for if we love people by the Spirit,we love God,and we want no harm towards people,and to please God by acting like Christ,representing goodness,depart from iniquity.
They could not have the Spirit in the Old Testament so God had them do the physical ordinances,and physical laws,until Christ came,and then they passed away.
In the New Testament we can have the Spirit,and go by the 2 greatest commandments,love God,and love people.
But someone had to fulfill the Old Testament laws,which Jesus fulfilled the prophets,and law,for He is sinless under the Old Testament,the perfect saint,perfect sacrifice,perfect mediator,perfect High Priest,perfect King,kinsman redeemer,perfect Prophet,and whatever else He has to be.
All the roles that people played in accordance with the nation of Israel being perfect in those positions,so collectively it is all abiding by the truth of God in a spiritual sense,so the Old Testament law,and prophets,could be fulfilled,Jesus did it.
Jesus said till heaven and earth pass,one jot or one tittle shall in no wise pass from the law,till all be fulfilled,which the earth will pass away at the end of the millennial reign of Christ,and when the saints are in the New Jerusalem,the former earth shall not be remembered,or come to mind.
In the millennial reign Jesus will fulfill the perfect King role on earth,fulfilling the law,and the prophets,completely,and at the end of the millennial reign the earth shall pass away,and all is fulfilled.
In the New Testament we only go by the two greatest commandments,love God,and love people,which we can do by the Spirit,which they could not have the Spirit in the Old Testament,and Jesus fulfilled the law,and the prophets,and we do not go by the physical ordinances of Israel in the New Testament,because they have no impact on spiritual salvation,and love is the fulfilling of the law.