We for they, A.V. and T.R. It is not obvious why St. Luke mentions the many lights. Some say to mark the solemnity of the first day of the week (Kuinoel); some, to remove all possible occasion of scandal as regards such midnight meetings (Bengel); some, to explain how the young man's fall was immediately perceived (Meyer); others, to account for the young man's drowsiness, which would be increased by the many lights, possibly making the room hot (Alford); for ornament (Olshausen).
But possibly it is the mere mention by an eye-witness of a fact which struck him. It is obvious that the room must have been lit for a night meeting—only perhaps there were more lights than usual.