Luke 2:44

but supposing him to be in the group they went a day’s journey , but then they began to search for him among their relatives and acquaintances ,

Thinking he was in their company, they traveled on for a day. Then they began looking for him among their relatives and friends.

But they, supposing him to have been in the company, went a day's journey; and they sought him among their kinsfolk and acquaintance.