Those words which seem to be from me were NOT FROM ME.Does the law of Israel apply to you or not? Do you do and observe what the pharisee says to do and observe? Do you sacrifice a bull without blemish? Do you apply the law of Israel to you?
So, back to this question...
What applies to me is the Law of Christ.
Love God with all your heart, strength, mind, and soul, and love your neighbor as you love yourself.
As not murdering, not stealing, not telling lies, and not committing adultery, etc. are covered by both the Law of Moses and the Law of Christ, those parts do apply to all men.
I have no need for circumcision, dietary rules, tithing, feast keeping, or sabbath keeping.
Or for hundreds of other man made regulations meant to separate Israel from the world around them in the OT.
Colossians 2: 8, 14, 16-17, 18-19, 20-22.explains it fairly well...
"8 Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
14 Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross;
16 Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath days:
17 Which are a shadow of things to come; but the body is of Christ.
18 Let no man beguile you of your reward in a voluntary humility and worshipping of angels, intruding into those things which he hath not seen, vainly puffed up by his fleshly mind,
19 And not holding the Head, from which all the body by joints and bands having nourishment ministered, and knit together, increaseth with the increase of God.
20 Wherefore if ye be dead with Christ from the rudiments of the world, why, as though living in the world, are ye subject to ordinances,
21 (Touch not; taste not; handle not;
22 Which all are to perish with the using, after the commandments and doctrines of men?
I hope that answers your question.