: Fiery, six-winged beings called seraphs hover above the throne. They use four wings for humility (covering their faces and feet) and two for service (flying). The Proclamation

: Faced with God’s holiness, Isaiah is overwhelmed by his own unworthiness, crying, "Woe is me! I am lost, for I am a man of unclean lips".

Unlike Moses, who made excuses (Exodus 4:10), Isaiah has had his lips cleansed and can now answer without fear.