Luke 2:40

37 and she had been a widow even unto fourscore and four years), who departed not from the temple, worshipping with fastings and supplications night and day.

38 And coming up at that very hour she gave thanks unto God, and spake of him to all them that were looking for the redemption of Jerusalem.

39 And when they had accomplished all things that were according to the law of the Lord, they returned into Galilee, to their own city Nazareth.

40 And the child grew, and waxed strong, filled with wisdom: and the grace of God was upon him.

41 And his parents went every year to Jerusalem at the feast of the passover.

42 And when he was twelve years old, they went up after the custom of the feast;

43 and when they had fulfilled the days, as they were returning, the boy Jesus tarried behind in Jerusalem; and his parents knew it not;