G. Campbell Morgan
The purpose of the coming to Jerusalem in Luke 2:42 on the part of Mary and Joseph was undoubtedly primarily that of fulfilling the requirements of the law, the bringing of Jesus to His confirmation. At this point the boy was supposed to enter upon that period of life when He should have immediate dealings with the law, receiving it no longer through the instruction of His parents; but having been brought by them into a knowledge of its requirements, He would now take upon Himself the responsibility.
The rite, which is still in existence, consists in the preparation by the candidate of certain passages of the law, which are to be recited, and his presentation to the rulers and doctors, that in conversation with him, they may ask him questions, testing his knowledge, and he may submit to them questions arising out of his training. It was to this ceremony of confirmation that Jesus was brought at the age of twelve.
The picture of Christ here is very full of beauty, although too often the natural fact is obscured by false ideas concerning the attitude of Jesus towards the teachers. A very popular conception of His action here is that of a boy delighting to ask questions that will show His own wisdom and puzzle the doctors.