Following that summons to praise, this great Hallel gives thanks to the LORD with the refrain that answers every line, that His mercy endures forever. It recounts His works from creation, the heavens and the earth, the sun to rule the day and the moon and stars by night, on through the redemption of the Exodus, the dividing of the Red Sea, the overthrow of Pharaoh, and the gift of the promised land. Turning to Israel's own low estate, the psalm confesses that He remembered them, rescued them, and gives food to all flesh. The steady refrain teaches the worshiping people that behind every act of God stands His covenant faithfulness, the mercy that endures forever and finds its fullness in Christ.