Why is this the only verse in the bible that talks about jesus as an adolescence?

Luke 2:41-52 41Every year his parents went to Jerusalem for the Feast of the Pover. 42When he was twelve years old, they went up to the Feast, according to the custom. 43After the Feast was over, while his parents were returning home, the boy Jesus stayed behind in Jerusalem, but they were unaware of it. 44Thinking he was in their company, they traveled on for a day. Then they began looking for him among their relatives and friends. 45When they did not find him, they went back to Jerusalem to look for him. 46After three days they found him in the temple courts, sitting among the teachers, listening to them and asking them questions. 47Everyone who heard him was amazed at his understanding and his answers. 48When his parents saw him, they were astonished. His mother said to him, "Son, why have you treated us like this? Your father and I have been anxiously searching for you."