Bind them continually upon thine heart, and tie them about thy neck. Bind them continually upon thine heart - See on Proverbs 3:3 (note). And see a similar command, to which this is an allusion, Deuteronomy 6:6-8 (note).
Related Commentaries of Proverbs 6:21
Proverbs 6:21
21 Bind them continually upon thine heart, and tie them about thy neck.