Deuteronomy 19:9

New King James Version

and if you keep all these commandments and do them, which I command you today, to love the Lord your God and to walk always in His ways, then you shall add three more cities for yourself besides these three,

Cross References

Deuteronomy 12:32

“Whatever I command you, be careful to observe it; you shall not add to it nor take away from it.

Deuteronomy 6:5

You shall love the Lord your God with all your heart, with all your soul, and with all your strength.