Deuteronomy 32:4-6

Amplified Bible

⁴ 
“The Rock! His work is perfect,
For all His ways are just;
A God of faithfulness without iniquity (injustice),
Just and upright is He.
⁵ 
“They (Israel) have acted corruptly toward Him.
They are not His children, because of their [moral] defect;
But are a perverse and crooked generation.
⁶ 
“Do you thus repay the Lord,
O foolish and unwise people?
Is not He your Father who has acquired you [as His own]?
He has made you and established you [as a nation].