This emphasizes what they will say. AT: "Listen" or "Pay attention to what we are about to tell you"
This was a sign of surrender.
Ahab asks this question to express surprise. AT: "I am surprised that he is still alive!" (See: rc://en/ta/man/translate/figs-rquestion)
"My brother" here is a metaphor for somebody who is a good friend. AT: "He is like a brother to me" or "He is like family" (See: rc://en/ta/man/translate/figs-metaphor)