A man comes up to three workers and asks, “What are you doing?”
The first person replies, “I'm laying a brick, putting mortar on it, and then laying another brick.”
The second person answers, “I'm earning an income to support my family.”
The third person says, “I'm building a cathedral.”
Very different responses! All are doing the same thing, but not all have the same purpose or mission. Perhaps we can think of a fourth response?