World Wide Study Bible
a Bible passage
16. my Father's house—How close the resemblance of these remarkable words to Lu 2:49; the same consciousness of intrinsic relation to the temple—as the seat of His Father's most august worship, and so the symbol of all that is due to Him on earth—dictating both speeches. Only, when but a youth, with no authority, He was simply "a Son in His own house"; now He was "a Son over His own house" (Heb 3:6), the proper Representative, and in flesh "the Heir," of his Father's rights.
house of merchandise—There was nothing wrong in the merchandise; but to bring it, for their own and others' convenience, into that most sacred place, was a high-handed profanation which the eye of Jesus could not endure.