Host of heaven

The sun, moon, and stars are so designated (Gen 2:1). When the Jews fell into idolatry they worshipped these (Deut 4:19; 2 Kgs 17:16; 2 Kgs 21:3, 2 Kgs 21:5; 2 Kgs 23:5; Jer 19:13; Zeph 1:5; Acts 7:42).

From Easton’s Bible Dictionary (1897), by Matthew George Easton.