BD Josiah (1) King of Judah, 641-610 B.C. (see 2 Kgs. 22 - 24; 2 Chr. 34 - 35). W hile still young, he made, under the guidance of Hilkiah, a thorough rel igious reformation, which extended to the northern tribes. He restored t he temple,destroyed idolal Josiah is from a Hebrew name meaning "The Lord Supports"; Diminutives: Josh; Alternates: Josias; Greek: Josias. Royalty: Josiah (640-609 B.C) - - A King of Judah.