Matthew 11:3

3. Art thou he that should come Here is no doubt a reference to Malachi 3:1, where it is said: “Jehovah whom ye seek shall suddenly come to his temple.” The slowness of our Lord to develope the glory of his kingdom seemed to John not to agree with the suddenness ascribed to the Messiah. Do we look for another John here seems to be running into the same train of reasoning as that which induced the later Jews to adopt the theory of two Messiahs, one of whom (called by them the Son of Joseph) should fulfil the humiliations described by the prophets as belonging to the Messiah; and the other (whom they called the Son of David) should fulfil the glorious part of the prophecies. I do not mean that John adopted or was acquainted with this Jewish theory; but that the same idea (namely, the contrast lying between the humble suffering Messiah and the glorious Messiah, Prince of the kingdom of God) which prompted that theory prompted his question.