Deuteronomy 19:9
provided you are careful to keep all this commandment, which I command you today, by loving the LORD your God and by walking ever in his ways--then you shall add three other cities to these three,
Joshua 20:7-8
So they set apart Kedesh in Galilee in the hill country of Naphtali, and Shechem in the hill country of Ephraim, and Kiriath-arba (that is, Hebron) in the hill country of Judah.
Deuteronomy 11:22-25
For if you will be careful to do all this commandment that I command you to do, loving the LORD your God, walking in all his ways, and holding fast to him,
Deuteronomy 12:32
"Everything that I command you, you shall be careful to do. You shall not add to it or take from it.