Zephaniah 1:5

And them that worship the host of heaven upon the housetops; and them that worship [and] that swear by the LORD, and that swear by {c} Malcham;

(c) He alludes to their idol Molech, which was forbidden; read Le 20:2, yet they called him their king, and made him as a god: therefore he here notes those that will both say they worship God, and yet will swear by idols and serve them: which faltering is here condemned, as in Eze 20:39, 1Ki 18:21, 2Ki 17:33.
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