You have to know what commandments Jesus gave.
Moses gave the law to Israel and that law came to an end shortly after the writing of Hebrews.
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This is [he], that was in the church in the wilderness with the angel
which spake to him in [the mount Sina], and with our fathers:
who received the lively oracles [ to give unto us ] Acts 7:38
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Romans 9:4 (KJV)
Who are Israelites; to whom pertaineth the adoption, and the glory, and the covenants,
and the giving of the law, and the service of God, and the promises;
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1 Chronicles 16:17 (KJV)
And hath confirmed the same to Jacob for a law,
and to Israel for an everlasting covenant,
Psalms 105:10 (KJV)
And confirmed the same unto Jacob for a law,
and to Israel for an everlasting covenant:
Psalms 78:5 (KJV)
For he established a testimony in Jacob, and appointed a law in Israel,
which he commanded our fathers, that they should make them known to their children:
Isaiah 42:24 (KJV)
Who gave Jacob for a spoil, and Israel to the robbers? did not the Lord,
he against whom we have sinned? for they would not walk in his ways,
neither were they obedient unto his law.
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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.