Deuteronomy 6:5-9

5And you must love the Lord your God with all your heart, all your soul, and all your strength.

6And you must commit yourselves wholeheartedly to these commands that I am giving you today.

7Repeat them again and again to your children. Talk about them when you are at home and when you are on the road, when you are going to bed and when you are getting up.

8Tie them to your hands and wear them on your forehead as reminders.

9Write them on the doorposts of your house and on your gates.