For the commandment is a lamp; and the law is light; and reproofs of instruction are the way of life:
For the commandment is a lamp; and the law is light - illuminating the soul, and guiding us into the true path of faith and life (Psalms 19:8; Psalms 119:105). This gives the reason why he has said, The commandment shall lead thee (Proverbs 6:22).
And reproofs of instruction (disciplinary reproofs) are the way of life. Reproofs coupled with disciplinary chastening are needed, if we are to learn "the way of life" (Proverbs 3:11; Hebrews 12:5).