Zephaniah 1:6

And them that are turned back from the LORD; and [those] that have not sought the LORD, nor enquired for him.

Ver. 6. And them that are turned back from the Lord] Not gross idolaters, but yet treacherous backsliders, that fall off from their former forwardness, that turn from the holy commandments, 2 Peter 2:21, that depart a post Dominum, from after the Lord, as the Hebrew here hath it, apostates, those worst of men, that do not only not fulfil after the Lord, as Caleb, but utterly forsake him. A heavier judgment awaiteth such. "God shall lead them forth with the workers of iniquity," Psalms 125:5 .

And those that have not sought the Lord, nor enquired after him] Diligently sought him, Hebrews 11:6, zealously inquired after him, as after a lost jewel, Jeremiah 29:13. God will visit for unzealousness; and curse those that do his work carelessly, cursorily, in a perfunctory, formal, bedulling way.