Proverbs 6:23 in the King James Version
For the commandment is a lamp; and the law is light; and reproofs of instruction are the way of life:
Context
22 When you walk, it will lead you. When you sleep, it will watch over you. When you awake, it will talk with you.
23 For the commandment is a lamp, and the law is light. Reproofs of instruction are the way of life,
24 to keep you from the immoral woman, from the flattery of the wayward wife’s tongue.