Once I have sworn by My holiness; I will not lie to David; His seed shall endure forever, And his throne as the sun before Me.
Psalm 89:35-36

For I am the LORD who brings you up out of the Land of Egypt, to be your God. You shall therefore be holy, for I am holy.
Leviticus 11:45

As He who called you is holy, you also be holy in all your conduct, because it is written, "Be holy, for I am holy."
Peter 1:15-16