“I wash my hands in innocence.
I go around your altar.
I sing aloud a song of thanksgiving.
I tell all your wondrous deeds.”
David once again maintained his innocence. He washed his hands in innocence in some sort of liturgical worship action in the Temple. He walked around the altar of Yahweh. Theoretically only a Levite could do this. He sang a song of thanksgiving that told all about the wondrous deeds of Yahweh.