Yea, my reins shall rejoice, when thy lips speak right things.
– Proverbs 23:16
The word for reins literally means kidneys, but references to internal organs or parts, such as bones, are intended to speak of being deeply affected within. Rejoicing of the reins speaks of a deep joy and rejoicing of the whole man. The word for right things means even and straight. It is used figuratively to speak of moral uprightness. The parent rejoices when the child grows to speak right things, because this means he has learned wisdom. Speaking right things is the essential cry of wisdom in Proverbs 8:6. Those who have been instructed in wisdom, speak wise things (Proverbs 15:2, 28). Even the Servant of Yahweh speaks wisdom with “the tongue of the learned” (Isaiah 50:4). True wisdom can only be spoken from a heart possessing true wisdom (Proverbs 12:17; 14:5).