The words below weren't given to just the Jews. Remember, there were 12 Tribes AND the foreigners who had followed Moshe out of Egypt camped at the foot of Mt. Sinair when YHWH handed down the Torah!
In Numbers 15:13-16, He said four times in a row that ALL who accept Him as their God, were to do exactly as His people did and that the same Torah and standard of judgment would apply to both, the Hebrews and the foreigner living with them.
When Moshe's successor, Joshua, was appointed as leader of the Israelites, ADONAI Himself said the following ... which echoes into our own life today:
Joshua 1: 7 Only be strong and very bold in taking care to follow all the Torah which Moshe my servant ordered you to follow; do not turn from it either to the right or to the left; then you will succeed wherever you go. 8 Yes, keep this book of the Torah on your lips, and meditate on it day and night, so that you will take care to act according to everything written in it. Then your undertakings will prosper, and you will succeed. (CJB)
It is imperative to remember that Torah consists of YHWH's Divine Instructions in Righteousness, without which we would have no blueprint for moral, holy living. Torah wasn't "nailed to the cross" when Y'shua died; our certificate of charges was...
So, with the Fall festivals on the horizon, now would be a great time to start thinking of joining YHWH's Torah observant community; learning and growing and getting a closer relationship with Him and His Messiah than you've ever had before!