1 Corinthians 10:10

10:10 And do not complain, as some of them did, and were killed by the destroying angel. ¹ 

Revelation 9:11

9:11 They have as king over them the angel of the abyss, whose name in Hebrew is Abaddon, and in Greek, Apollyon. ² 

[10:10]  ¹ tn Grk “by the destroyer.” BDAG 703 s.v. ὀλοθρευτῆς mentions the corresponding OT references and notes, “the one meant is the destroying angel as the one who carries out the divine sentence of punishment, or perh. Satan.”

[9:11]  ² sn Both the Hebrew Abaddon and the Greek Apollyon mean “Destroyer.”