en_tn/deu/11/18.md

lay up these words in your heart and soul

AT: "be very careful to remember what I am saying to you" (See: rc://en/ta/man/translate/figs-metonymy)

bind them as a sign on your hand, and let them be as frontlets between your eyes

See how you translated similar phrases in Deuteronomy 6:8.

when you sit in your house, when you walk on the road, when you lie down, and when you get up

They were to discuss God's commandments and teach them to their children anytime and anywhere.