And them that worship, and that swear, &c.— And those worshippers, who, when they swear by the Lord, swear also by Melchom; that is to say, who would unite together the worship of Jehovah, and that of Melchom, the idol of the Ammonites. See 2 Kings 18.
Related Commentaries of Zephaniah 1:5
Zephaniah 1:5
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 Malcham;