 Remember that you were a slave in the land of Egypt, and the Lord your God brought you out from there with a mighty hand and an outstretched arm. Therefore, the Lord your God commanded you to keep the Sabbath day. Our psalm for today is from Psalm 81. Sing aloud to God our strength. Shout for joy to the God of Jacob. Raise a song, sound the tambourine, the sweet lyre with the harp.