What you have NOT done is show that it applies to GENTILES.
What will you do with Acts 15???
All the world will be judged according to Torah... And according to the prophets, the whole world will keep Torah.
Yeshua (your Master, the one you are disciple to) says to teach and do YHWH's law.
James says to keep YHWH's commandments.
John says to keep YHWH's commandments.
Peter says to keep YHWH's commandments
Paul says to keep YHWH's commandments.
Revelation says the dragon goes after those who keep the commandments of YHWH and have the testimony of Yeshua Messiah.
Sin is defined as transgression of Torah. How do you 'go and sin no more'?
Wickedness is the twisting of Torah. How do you avoid being wicked?
Iniquity is the act of lawlessness - being without Torah. How do you avoid iniquity?
Torah teaches the discernment of the common vs. the set-apart. How do you learn to keep and do what is sanctified?
Torah is perfect for converting the soul.
What will you do with Acts 15???
Your Master said to do and teach the law - That should be all you need to know.
A disciple cannot gainsay his master, and these men were the direct disciples of Yeshua, and they cannot gainsay the Master either.
So I would say that I think you are reading Acts 15 wrongly.