Dan,
try to stick with the question: it was about the one being preached in Acts 15 and disturbing people. To listen to MADs, you would think it would have been exciting people.
No.
Where they were off in Acts 15 was in their thinking that THEIR mission had continued.
This here...
Deuteronomy 4:5 Behold, I have taught you statutes and judgments, even as the LORD my God commanded me, that ye should do so in the land whither ye go to possess it. 4:6 Keep therefore and do them; for this is your wisdom and your understanding in the sight of the nations, which shall hear all these statutes, and say, Surely this great nation is a wise and understanding people. 4:7 For what nation is there so great, who hath God so nigh unto them, as the LORD our God is in all things that we call upon him for? 4:8 And what nation is there so great, that hath statutes and judgments so righteous as all this law, which I set before you this day?
Exodus 12:48 And when a stranger shall sojourn with thee, and will keep the passover to the LORD, let all his males be circumcised, and then let him come near and keep it; and he shall be as one that is born in the land: for no uncircumcised person shall eat thereof.
Isaiah 2:1 The word that Isaiah the son of Amoz saw concerning Judah and Jerusalem. 2:2 And it shall come to pass in the last days, that the mountain of the LORD's house shall be established in the top of the mountains, and shall be exalted above the hills; and all nations shall flow unto it. 2:3 And many people shall go and say, Come ye, and let us go up to the mountain of the LORD, to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for out of Zion shall go forth the law, and the word of the LORD from Jerusalem. 2:4 And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more. 2:5 O house of Jacob, come ye, and let us walk in the light of the LORD.
That was not "phoney" as your OP erroneously called it as to Acts 15.
Rather: they were off as to the timing of of its' application, because its' timing was interrupted; which is what James is talking about later in Acts 15; per his, Cephas' and John's conversation with Paul in Galatians 2.
See also Rom. 9:22-24; a sister passage to 2 Peter 3.