In today's reading from Matthew 18, when the disciples asked Jesus, "Who is the greatest in the Kingdom of heaven?" He called a child over, placed it in their midst, and said, "Amen, I say to you, unless you turn and become like children, you will not enter the Kingdom of heaven. Whoever becomes humble like this child is the greatest in the Kingdom of heaven." It struck me that we would never have come up with such an answer if we were asked this question by the disciples. It just shows that Jesus knew, further authenticating his divinity.