"You shall love the Lord your God
with all your heart
and with all your soul
and with all your might.
And these words
that I command you today
shall be on your heart.
You shall teach them diligently
to your children,
and shall talk of them
when you sit in your house,
and when you walk by the way,
and when you lie down,
and when you rise."
Deut 6:4-8
