Luke 2:44

44 they thought that he was with the group, so they traveled a whole day and then started looking for him among their relatives and friends.

Luke 2:44 In-Context

42 When Jesus was twelve years old, they went to the festival as usual.
43 When the festival was over, they started back home, but the boy Jesus stayed in Jerusalem. His parents did not know this;
44 they thought that he was with the group, so they traveled a whole day and then started looking for him among their relatives and friends.
45 They did not find him, so they went back to Jerusalem looking for him.
46 On the third day they found him in the Temple, sitting with the Jewish teachers, listening to them and asking questions.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.