Luke 2:42-51 New King James Version (NKJV)
42 And when He was twelve years old, they went up to Jerusalem according to the custom of the feast. 43 When they had finished the days, as they returned, the Boy Jesus lingered behind in Jerusalem. And Joseph and His mother[a] did not know it; 44 but supposing Him to have been in the company, they went a day’s journey, and sought Him among their relatives and acquaintances. 45 So when they did not find Him, they returned to Jerusalem, seeking Him. 46 Now so it was that after three days they found Him in the temple, sitting in the midst of the teachers, both listening to them and asking them questions. 47 And all who heard Him were astonished at His understanding and answers. 48 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.”
49 And He said to them, “Why did you seek Me? Did you not know that I must be about My Father’s business?” 50 But they did not understand the statement which He spoke to them.
Jesus Advances in Wisdom and Favor
51 Then He went down with them and came to Nazareth, and was subject to them, but His mother kept all these things in her heart.
Luke 2:42-51 New International Version (NIV)
42 When he was twelve years old, they went up to the festival, according to the custom. 43 After the festival was over, while his parents were returning home, the boy Jesus stayed behind in Jerusalem, but they were unaware of it. 44 Thinking he was in their company, they traveled on for a day. Then they began looking for him among their relatives and friends. 45 When they did not find him, they went back to Jerusalem to look for him. 46 After three days they found him in the temple courts, sitting among the teachers, listening to them and asking them questions. 47 Everyone who heard him was amazed at his understanding and his answers. 48 When his parents saw him, they were astonished. His mother said to him, “Son, why have you treated us like this? Your father and I have been anxiously searching for you.”
49 “Why were you searching for me?” he asked. “Didn’t you know I had to be in my Father’s house?”[a] 50 But they did not understand what he was saying to them.
51 Then he went down to Nazareth with them and was obedient to them. But his mother treasured all these things in her heart.