Matthew Henry Commentary Proverbs 3:21-26

"My son, let them not depart from thine eyes; Keep sound wisdom and discretion: So shall they be life unto thy soul, And grace to thy neck. Then shalt thou walk in thy way securely, And thy foot shall not stumble. When thou liest down, thou shalt not be afraid: Yea, thou shalt lie down, and thy sleep shall be sweet. Be not afraid of sudden fear, Neither of the desolation of the wicked, when it cometh: For Jehovah will be thy confidence, And will keep thy foot from being taken." — Proverbs 3:21-26 (ASV)

Let us not allow Christ's words to depart from us, but keep sound wisdom and discretion; then we will walk safely in His ways. The natural life, and all that belongs to it, will be under the protection of God's providence; the spiritual life, and all its interests, will be under the protection of His grace, so that we will be kept from falling into sin or trouble.