Deuteronomy 32:4 in the King James Version
He is the Rock, his work is perfect: for all his ways are judgment: a God of truth and without iniquity, just and right is he.
Context
3 For I will proclaim the LORD’s name. Ascribe greatness to our God!
4 The Rock: his work is perfect, for all his ways are just. A God of faithfulness who does no wrong, just and right is he.
5 They have dealt corruptly with him. They are not his children, because of their defect. They are a perverse and crooked generation.