Yeshua’s instruction to that denomination was to do as Moses said, and keep the ancient commandments.
John 5:
[43] I am come in my Father's name, and ye receive me not: if another shall come in his own name, him ye will receive.
[44] How can ye believe, which receive honour one of another, and seek not the honour that cometh from God only?
[45] Do not think that I will accuse you to the Father: there is one that accuseth you, even Moses, in whom ye trust.
[46] For had ye believed Moses, ye would have believed me: for he wrote of me.
[47] But if ye believe not his writings, how shall ye believe my words?
Matthew 5:
[17] Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
[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.
[19] Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
[20] For I say unto you, That except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter into the kingdom of heaven
True believers who put their full faith in Christ alone are freely and fully clothed in the righteousness of Christ. Those who preach that righteousness is earned by any other means are preaching another gospel and should be considered accursed by God.