John Chrysostom — as excerpted in the Catena Aurea on John 1:43-46

“(Hom. xx. 1, 2) Nathanael knew from the Scriptures, that Christ was to come from Bethlehem, according to the prophecy of Micah, And thou, Bethlehem, in the land of Judah,—out of thee shall come a Governor, that shall rule my people Israel. (Micah 5:2) On hearing of Nazareth, then, he doubted, and was not able to reconcile Philip’s tidings with prophecy. For the Prophets call Him a Nazarene, only in reference to His education and mode of life. Observe, however, the discretion and gentleness with which he communicates his doubts. He does not say, Thou deceivest me, Philip; but simply asks the question, Can any good thing come out of Nazareth? Philip too in turn is equally discrete. He is not confounded by the question, but dwells upon it, and lingers in the hope of bringing him to Christ: Philip saith unto him, Come and see. He takes him to Christ, knowing that when he had once tasted of His words and doctrine, he will make no more resistance.”