Luke 2:39-44; 48-49 So when they had performed all things according to the law of the Lord, they returned to Galilee, to their own city, Nazareth. And the Child grew and became strong in spirit, filled with wisdom; and the grace of God was upon Him. His parents went to Jerusalem every year at the Feast of the Passover. And when He was twelve years old, they went up to Jerusalem according to the custom of the feast. When they had finished the days, as they returned, the Boy Jesus lingered behind in Jerusalem. And Joseph and His mother did not know it; but supposing Him to have been in the company, they went a day’s journey, and sought Him among their relatives and acquaintances.

vs 48-49 So when they saw Him, they were amazed; and His mother said to Him, “Son, why have You done this to us? Look, Your father and I have sought You anxiously.” And He said to them, “Why did you seek Me? Did you not know that I must be about My Father’s business?” But they did not not understand the statement which He spoke to them.