“When those days were over and they were returning home, the boy Jesus remained behind in Jerusalem, but His parents were unaware He had stayed.”
Luke 2:43 (BSB)
Context Reading
41Every year His parents went to Jerusalem for the Feast of the Passover. 42And when He was twelve years old, they went up according to the custom of the Feast. 43When those days were over and they were returning home, the boy Jesus remained behind in Jerusalem, but His parents were unaware He had stayed. 44Assuming He was in their company, they traveled on for a day before they began to look for Him among their relatives and friends. 45When they could not find Him, they returned to Jerusalem to search for Him.