Zephaniah 3:9

For then … people a pure language the peoples a pure lip. The term lipoften means "language" (Genesis 11:1), but here it seems rather to denote the organ of speech. Comp. Isaiah 6:5; Isaiah 6:7, "I am a man of unclean lips … lo, this hath touched thy lips, and thine iniquity shall depart." The construction is condensed, and the meaning is, then will I turn to the peoples their lip into a pure lip. Their lips were unclean either generally from their inward sinfulness or especially from their taking the names of their false gods upon them (Psalms 16:4; Hosea 2:19). With purified lips they shall fitly call upon the name of the Lord.

serve himwith one consent lit. with one shoulder, or, back. The Sept., under one yoke, probably rightly interprets the figure, which is that of animals labouring together with a single yoke laid over their shoulders in common. On the general sense comp. Jeremiah 32:39; Ezekiel 11:19-20.