Deuteronomy 32:3-5

3 For I will proclaim the name of the Lord: Ascribe greatness to our God!

4 He is the Rock; His work is perfect; for all His ways are just. He is a God of faithfulness and without injustice; righteous and upright is He.

5 They have acted corruptly to Him; they are not His children, but blemished; they are a perverse and crooked generation.