the Week of Proper 20 / Ordinary 25
Kitto's Popular Cyclopedia of Biblical Literature
Abad´don, or Apollyon (destruction). The former is the Hebrew name, and the latter the Greek, for the angel of death, described (Revelation 9:11) as the king and chief of the Apocalyptic locusts under the fifth trumpet, and as the angel of the abyss or 'bottomless pit' [HADES].
Kitto, John, ed. Entry for 'Abaddon'. "Kitto's Popular Cyclopedia of Biblical Literature". https://www.studylight.org/​encyclopedias/​eng/​kbe/​a/abaddon.html.