From a traditional Jewish perspective there are two Laws, one for the Gentile nations and one for the Jewish people. According to the Talmud, the seven laws of Noah apply to all humanity as sons of Noah (B’nei Noah), whilst the Torah and its 613 commandments is are only applicable to the descendants of Jacob (Am Isra’el). Christianity has generally accepted this understanding and has used this to interpret the Jerusalem council’s (Apostolic) decree in Acts 15 and to affirm that Gentile believers do not have to comply with the Torah. The four requirements given in Acts15:20 are then taken to be part of the Noachide laws that are only for the Gentile believers as follows:-
Psa 119:29 Keep me from being deceitful, and be kind enough to teach me your Torah.
Articles on Torah