My son, let them not depart, &c. Let me prevail with thee to keep these good instructions before the eyes of thy mind continually. Constantly and seriously meditate upon them, and thereby thou wilt attain and retain sound wisdom and discretion. So shall they be life unto thy soul To thee, or thy person. They shall prolong thy life, and make it life indeed, namely, wise, holy, and happy: whereas a foolish, sinful, and miserable life is reputed a kind of death, and is often so called. Thus Moses says to Israel, He (namely, God) is thy life, and the length of thy days, Deuteronomy 30:20. Or Solomon here means, They shall be life to thy soul, properly so called. They shall quicken, delight, and save thy soul. And grace to thy neck They shall be like a beautiful chain or ornament about thy neck, as above, Proverbs 3:3, and Proverbs 1:9.
Related Commentaries of Proverbs 3:21
Proverbs 3:21-22
21 My son, let not them depart from thine eyes: keep sound wisdom and discretion:
22 So shall they be life unto thy soul, and grace to thy neck.