Luke 2:38-48

38 and she, at that hour, having come in, was confessing, likewise, to the Lord, and was speaking concerning him, to all those looking for redemption in Jerusalem.
39 And when they finished all things, according to the Law of the Lord, they turned back to Galilee, to their city Nazareth;
40 and the child grew and was strengthened in spirit, being filled with wisdom, and the grace of God was upon him.
41 And his parents were going yearly to Jerusalem, at the feast of the passover,
42 and when he became twelve years old, they having gone up to Jerusalem, according to the custom of the feast,
43 and having finished the days, in their returning the child Jesus remained behind in Jerusalem, and Joseph and his mother did not know,
44 and, having supposed him to be in the company, they went a day's journey, and were seeking him among the kindred and among the acquaintances,
45 and not having found him, they turned back to Jerusalem seeking him.
46 And it came to pass, after three days, they found him in the temple, sitting in the midst of the teachers, both hearing them and questioning them,
47 and all those hearing him were astonished at his understanding and answers.
48 And, having seen him, they were amazed, and his mother said unto him, `Child, why didst thou thus to us? lo, thy father and I, sorrowing, were seeking thee.'
Young's Literal Translation is in the public domain.