Good evening to you well I don’t understand why you feel that God would abolish the Law of Moses because of faith in Jesus Christ. It will never happen the Law will always stand as a testimony to divine principles and legal standards for humans on Earth. Did it ever occur to you that the Law of Moses is of the Tree of Knowledge, which is to say the ability to tell the difference from right and wrong. Those that understand and acknowledge the Law of Moses are clean and wholesome, and when you reach Judgment Day the Law of Moses will stand as a judgment code for all people no matter what religion you belong to. The Bible makes one point very clearly that Jesus Christ followed all the principles of the Law and that is what God expects people to do. When we dedicate our lives to following Jesus' example by our faith in him and his works, we pledge to also follow the Law of Moses the same as Jesus did.