Thesis: The call of the Second Isaiah is part of a pattern of biblical calls (Moses, Gideon, David, Isaiah, Jeremiah) that show us God uses what we least expect. This ultimately culminates in the Cross.
Old Testament Call Narratives
Isaiah 40 as Call Narrative
Moses
Gideon
David
Jeremiah
Isaiah 6
Jesus and his Cross as the Ultimate Call Narrative (Not my will, but thy will)