Thy word have I hid in mine heart, that I might not sin against thee.
Thy word have I hid in mine heart, that I might not sin against thee - the sure preservative against falling (Psalms 37:31). So the Virgin Mary (Luke 2:19; Luke 2:51; Proverbs 7:1). He is sure to slip who lets the Word of God, the antidote to sin, slip from his heart.