Many times when one is troubled, he will begin to question God. The psalmist began with this question to God. “Why have You cast us off forever?” He enumerated the various offences of the enemy. They had destroyed the temple of God and all of its furnishings. God’s people were captives under a vile and corrupt nation. The writer reminded the Lord of His care and protection during the deliverance from Egypt hundreds of years earlier and the covenant that had been made with Abraham, Isaac and Jacob. He prayed for another deliverance and for the punishment of His enemies.
They had forgotten their history, so they were then reliving it.