Luke 2:39-43

And when His parents had completed everything in accordance with the Law of the Lord, they returned to Galilee, to their own city of Nazareth.

Now the Child continued to grow and to become strong, increasing in wisdom; and the favor of God was upon Him. Visit to Jerusalem

His parents went to Jerusalem every year at the Feast of the Passover.

And when He was twelve years old, they went up there according to the custom of the feast;

and as they were returning, after spending the full number of days required, the boy Jesus stayed behind in Jerusalem, but His parents were unaware of it.