Guard Your Heart: Proverbs 4:23, Deuteronomy 4:9.
23 Keep your heart with all vigilance,
for from it flow the springs of life.
9 “Only take care, and keep your soul diligently, lest you forget the things that your eyes have seen, and lest they depart from your heart all the days of your life. Make them known to your children and your children’s children—