There are laws that were especially written just for the Hebrews pertaining to the rituals of the Temple, sacrifices, festivals, Torah, Kohanim and Levites, the King and the Nazarite and then there are the existing moral laws for all of us to still follow as in prayers and blessings, love and brotherhood, the poor and unfortunate, treatment of the Gentiles, Marriage, divorce and family, forbidden sexual relations, business practices, employees and servants, vows, oaths, swearing, Court and Judicial procedures, injuries and damages, property and property rights, Criminal laws, prophecy, idolatry and all its practices as the moral laws keep us in line with the will of God that we present ourselves a vessel of honor that God delights in as we allow the light of Christ shine in us and through us as a testimony of Gods grace and mercy as it is not ourselves that do any good thing, but Gods Spirit working in us and through us as we surrender our will to that of Gods will to be done.
Matthew 22:
35 Then one of them, which was a lawyer, asked him a question, tempting him, and saying,
36 Master, which is the great commandment in the law?
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.
38 This is the first and great commandment.
39 And the second is like unto it, Thou shalt love thy neighbour as thyself.
40 On these two commandments hang all the law and the prophets.
Matthew 5:
17 Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfill.
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.