Cross reference
Proverbs 4:21
21 Let them not go from your eyes; keep them deep in your heart.
Proverbs 3:21
21 My son, keep good sense, and do not let wise purpose go from your eyes.
Proverbs 2:1
1 My son, if you will take my words to your heart, storing up my laws in your mind;
Psalms 40:8
8 My delight is to do your pleasure, O my God; truly, your law is in my heart.
Proverbs 3:3
3 Let not mercy and good faith go from you; let them be hanging round your neck, recorded on your heart;
Proverbs 7:1-2
1 My son, keep my sayings, and let my rules be stored up with you.
2 Keep my rules and you will have life; let my teaching be to you as the light of your eyes;