It is the Psalm of exile. It was sung by the Jews in their Babylonian captivity as they thought of their holy city of Jerusalem. It has become forever the song of man as he realizes his exile from God, and realizing it, becomes man again: the one who can never be fully satisfied by anything in this fallen world, for by nature and vocation he is a pilgrim of the Absolute. This Psalm will be sung twice more: on the last two Sundays before Lent. It reveals Lent itself as pilgrimage and repentance—as