Zephaniah was contemporary with Jeremiah. He prophesied during King Josiah's reign, who was responsible for a great religious reformation. This followed the wicked reigns of Kings Manasseh and Amon, who led the nation into various forms of idolatry. Zephaniah pronounces inescapable judgments against Jerusalem for their sins, and exhorts national repentance. He continues by speaking of the "day of the LORD", when God will intervene to judge sin.