Deuteronomy 19:9

19:9 and then you are careful to observe all these commandments I am giving you today (namely, to love the Lord your God and to always walk in his ways), then you must add three more cities to these three.

Deuteronomy 30:16

30:16 What I am commanding you today is to love the Lord your God, to walk in his ways, and to obey his commandments, his statutes, and his ordinances. Then you will live and become numerous and the Lord your God will bless you in the land which you are about to possess.