Origen
Catena Aurea · Lukasevangelium 2
And when he was twelve 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 Jesus tarried behind in Jerusalem; and Joseph and his mother knew not of it. But they, supposing him to have been in the company, went a day’s journey; and they sought him among their kinsfolk and acquaintance. And when they found him not, they turned back again to Jerusalem, seeking him. And it came to pass, that after three days they found him in the temple, sitting in the midst of the doctors, both hearing them, and asking them questions. And all that heard him were astonished at his understanding and answers. And when they saw him, they were amazed: and his mother said unto him, Son, why hast thou thus dealt with us? behold, thy father and I have sought thee sorrowing. And he said unto them, How is it that ye sought me? wist ye not that I must be about my Father’s business? And they understood. not the saying which he spake unto them.
Because moreover He was the Son of God, He is found in the midst of the doctors, enlightening and instructing them. But because He was a little child, He is found among them not teaching but asking questions, as it is said, Sitting in the midst of the doctors, hearing them, and asking them questions. And this He did as a duty of reverence, that He might set us an example of the proper behaviour of children, though they be wise and learned, rather to hear their masters than teach them, and not to vaunt themselves with empty boasting. But He asked not that He might learn, but that asking He might instruct. For from the same source of learning is derived both the power of asking and answering wisely, as it follows, All who heard him were astonished at his wisdom.