1 Thessalonians 4:16

himself--in all the Majesty of His presence in person, not by deputy. descend--even as He ascended (Act 1:11). with--Greek, "in," implying one concomitant circumstance attending His appearing. shout--Greek, "signal shout," "war shout." Jesus is represented as a victorious King, giving the word of command to the hosts of heaven in His train for the last onslaught, at His final triumph over sin, death, and Satan (Rev 19:11-21). the voice of . . . archangel--distinct from the "signal shout." Michael is perhaps meant (Jde 1:9; Rev 12:7), to whom especially is committed the guardianship of the people of God (Dan 10:13). trump of God--the trumpet blast which usually accompanies God's manifestation in glory (Exo 19:16; Psa 47:5); here the last of the three accompaniments of His appearing: as the trumpet was used to convene God's people to their solemn convocations (Num 10:2, Num 10:10; Num 31:6), so here to summon God's elect together, preparatory to their glorification with Christ (Psa 50:1-5; Mat 24:31; Co1 15:52). shall rise first--previously to the living being "caught up." The "first" here has no reference to the first resurrection, as contrasted with that of "the rest of the dead." That reference occurs elsewhere (Mat 13:41-42, Mat 13:50; Joh 5:29; Co1 15:23-24; Rev 20:5-6); it simply stands in opposition to "then," Th1 4:17. FIRST, "the dead in Christ" shall rise, THEN the living shall be caught up. The Lord's people alone are spoken of here.

— Jamieson-Fausset-Brown Commentary (public domain)