Psalm 78:9-11

Amplified Bible

⁹ 
The sons of Ephraim were armed as archers and carrying bows,
Yet they turned back in the day of battle.
¹⁰ 
They did not keep the covenant of God
And refused to walk according to His law;
¹¹ 
And they forgot His [incredible] works
And His miraculous wonders that He had shown them.