Augustine of Hippo
They reverted and tested God, provoking the Holy One of Israel (Psalm 77:41). He echoes the disbelief previously referenced. The purpose of this repetition is to bring to mind the plagues He had brought upon the Egyptians for their benefit, which they should surely recall and not respond with ingratitude. In conclusion, what comes next? They failed to remember His mighty works on the day He delivered them from the oppressor.