13 in order that he may establish your hearts blameless in holiness before our God and Father, at the coming of our Lord Jesus with all his holy ones.
αμην = Angels.
That matches Matthew 24 to a T!
No it doesn't. Matthew 24's passage is about those who'd been judicially SCATTERED now being gathered from thence TO ONE PLACE UPON THE EARTH ("to worship the Lord in the holy mount AT JERUSALEM"); none of that is true of "the Church WHICH IS HIS BODY"/us.
Again, Matthew 24:29-31 = Isaiah 27:9,12-13 which correlates with Romans 11:27 (about Israel's FUTURE) and Daniel 9:24's time-prophecy (about Israel... and "thy [Daniel's] holy city")...
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1Th4:17 / 3:13 IS about the Church which is His body:
... similar wording as 1Th2:19 [G1715], note!13 in order that he may establish your hearts blameless in holiness before [emprosthen G1715 - 'in the presence of'] our God and Father, at [/in] the coming [parousia] of our Lord Jesus with all his holy ones.