2 Kings 23:5
And he put down the idolatrous priests, whom the kings of Judah had ordained to burn incense in the high places in the cities of Judah, and in the places round about Jerusalem; them also that burned incense unto Baal, to the sun, and to the moon, and to the planets, and to all the host of heaven.
Cross-reference
2 Kings 23:11 describes Josiah's removal of sun-worship items — another facet of the same purge in verse 5.
2 Kings 21:3 records Manasseh's reintroduction of Baal, Asherah, and astral worship—the exact practices Josiah later reversed.
Jeremiah 8:2 names the same sun, moon, and host of heaven that these priests served — the very objects of their idolatry.
Zephaniah 1:4 again targets Baal priests and idolatry, directly corresponding to Josiah's purge of such priests.
Zephaniah 1:5 explicitly names worship of the sun, moon, and host of heaven—the same astral worship Josiah stopped.
Deuteronomy 4:19 explicitly forbids worshiping the sun, moon, and host of heaven — the exact practice Josiah was stamping out.
2 Chronicles 33:3 shows Manasseh worshiping the host of heaven — the same idolatry Josiah later tore down.
2 Chronicles 34:4 records Josiah destroying Baal altars — the same event described in 2 Kings 23:5.
Job 31:26 shows a righteous person avoiding worship of the sun and moon — the very sin the priests committed.
Jeremiah 11:13 condemns altars to Baal — the same Baal worship Josiah removed.
Ezekiel 8:16 depicts men in the temple facing east worshiping the sun — the same practice Josiah eliminated among the idolatrous priests.