and my inmost being will rejoice when your lips speak what is right.
In context
14Strike him with the rod, and you will save his life from Sheol. 15My son, if your heart is wise, my heart too will be glad, 16and my inmost being will rejoice when your lips speak what is right. 17Do not let your heart envy sinners, but stay in the fear of Yahweh all day long. 18For there is a future, and your hope will not be cut off.
