 How much he loved being a part of a family. Let's go to Luke chapter 2 verse 41. King James. Now his parents went to Jerusalem every year at the feast of the Passover. And when he was 12 years old, they went up to Jerusalem after the custom of the feast. And when they had fulfilled the days, as they returned, the child of Jesus tarried behind in Jerusalem, and Joseph and his mother knew not of it.