And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.
Note 12 at Mt 24:31: Angels are created (Ne 9:6 and Col 1:16) spirit beings (Ps 104:4 and Heb 1:14) who are superior to man in might and power (Isa 37:36, 2Pe 2:11, and Re 20:1-2). Although their substance is spirit (1Ki 22:21 and Ps 104:4), they have oftentimes appeared in human form (Ge 19:1-22 and Jdg 6:11-22). They are holy (Mr 8:38), elect (1Ti 5:21), and engaged in God's work (Ps 103:20). Although heaven is their home (Mt 18:10, Mr 12:25, and Lu 1:19), they nevertheless are involved in God's service on earth (Heb 1:14). In Ge 28:12 and Joh 1:51, they are seen as ascending and descending between heaven and earth.
Some facts concerning angels are as follows: They are not to be worshiped (Col 2:18); they are innumerable (Heb 12:22); they serve God's people (Ac 12:7-11 and Heb 1:14); they rejoice over the salvation of the lost (Lu 15:10); they protect and deliver God's children (2Ki 6:17-18, Da 6:22, and Ac 5:19); they observe the affairs of people (1Co 4:9); they accompany the saints at death (Lu 16:22); they neither marry nor are given in marriage (Mt 22:30); they never die (Lu 20:36); they excel in strength, do God's commandments, and obey His Word (Ps 103:20); they will accompany Christ at His return (Mt 25:31); and they execute God's judgments (Mt 13:39-42, see note 2 at Lu 20:36).