"... Psalm 77 struggles with the question why God in the present does no act any longer in such a prodigious way he acted when Israel moved out from Egypt. Apparently God has changed his course of action. In the words of verse 10: "the right hand of the Most High has changed". This insight provokes a relecture and reflection of the ancient traditions: "I will remember your wonders of old, I will meditate on all your work" (verses 11-12). That leads to a new understanding of the Exodus and God's acting in it. The latter is depicted as an epiphany of Yaheweh as weather god in a thunderstorm with echoes of a battle with the chaotic water (verse l6-18). These are phenomena which could be experienced also in the time of the author. This appearance of Yahweh is very impressive, but it cannot be empirically demonstrated: "Your way was through the sea ... yet your footprints were unseen" (verse 19). And in the end the acting of God cannot be separated from the acting of human beings: "You led your people like a flock by the hand of Moses and Aaron" (verse 20). This critical relecture of the Exodus story does not question the Exodus event. But at least it is based on the assumption that the reality and the acting of God in the world have been substantially the same in the distant past and in the author's present ..."

Krüger, Thomas Recent Developments in the History of Ancient Israel and their Consequences for a Theology of the Hebrew Bible (pp. 5-13) University of Zurich, 2010