“Calves of the lips” is an ancient rendering of a difficult phrase in Hosea 14:2. It refers to worship expressed through words, such as hymns, prayers, gratitude, repentance, promises of reform, or vows of obedience, rather than meaningless animal ritual.
Hosea calls the people to return penitently to the LORD and offer the words of their lips. The Septuagint-based reading, “fruit of our lips,” is used in Hebrews as “sacrifice of praise.”
The Hebrew text is uncertain. The Revised Version retains a rendering involving bullocks or calves, while the Septuagint presupposes a slightly different Hebrew text and gives “fruit of our lips.”