I heard a nun tell this story recently and it seems appropriate for the beginning of the week...
A reporter went out to a construction site to interview several bricklayers about the project. He starts with the first worker and asks, "What are you doing?"
"I'm laying bricks, what does it look like?" the man replied.
So the reporter moves to the next guy with the same question.
"I'm building a wall," he said.
The third man received the same question and responded with awe in his voice.
"I'm building a great cathedral, where people can come together for worship."
Impressed, the reporter asked the last of the bricklayers: "What are you doing?"
"I'm building the kingdom of God."