Proverbs 6:21

When thou goest, it shall lead thee,.... The law of God taught by parents; this directs man in the path of duty and business of life; teaches him what way to shun, and which to walk in; it leads out…

The thought of Pro 3:3 is carried step further. No outward charm, but the law of obedience, shall give safety to the traveler, when he sleeps or when he wakes.

Here is, I. A general exhortation faithfully to adhere to the word of God and to take it for our guide in all our actions.

1. We must look upon the word of God both as a light (Pro 6:23) and as a law,…

heart … neck See Pro 3:3, note. Perhaps there is also the idea of an amulet or charm tied round the neck. See next verse.