Greek Expositor (anonymous) — as excerpted in the Catena Aurea on Luke 4:42-44

“(ut sup.) Now when Mark says that the Apostles came to him, saying, All seek thee, but Luke, that the people came, there is no difference between them, for the people came to Him following in the footsteps of the Apostles. But the Lord rejoiced in being held back, yet bid them let Him go, that others also might partake of His teaching, as the time of His presence would not last long; as it follows, And he said unto them, I must preach the kingdom of God to other cities also, &c. Mark says, Unto this I came, shewing the loftiness of His divine nature, and His voluntary emptying Himself of it. But Luke says, Unto this am I sent, shewing His incarnation, and calling also the decree of the Father, a sending Him forth; and one simply says, To preach, the other added, the kingdom of God, which is Christ Himself.”