(49) Thou art the Son of God.--The recognition begets recognition. That strange Presence he had felt as a spiritual power quickening hope and thought, making prophets' words living truths, filling with a true meaning the current beliefs about the Messiah;--yes; it goes through and through him again now. It is there before him. "Rabbi, Thou art the Son of God; Thou art the King of Israel." (For these titles as existing in the Messianic expectation of the day, comp. John 11:27; John 12:13; John 12:15; Matthew 26:63; Mark 3:11; Mark 5:7. See also Note on the quotation from Zech. in Matthew 21:5.)

Verse 49. - Nathanael was overcome by irresistible conviction that here was the Searcher of hearts, One gifted with strange powers of sympathy, and with right to claim obedience. Answered him - now for the first time with the title of Rabbi, or teacher - Thou art the Son of God. Nothing is more obvious than that this is the reflection of the testimony of the Baptist. "The Son of God," not "a Son of God," or "a Man of God," but the Personage whose rank and glory my master John had recognized. He may have doubted before whether the Baptist had not gone wild with hallucination, and could have meant what he said. Now the reality has flashed upon his mind from the glance of the Saviour's eye and the tones of his voice (see notes on ver. 34). The great term could not have meant to him what it does now to the Church. Still the truth involved in his words is of priceless significance. Luthardt says, "Nathanael's faith will never possess more than it embraces at this moment." Godet adds, "The gold seeker puts his hand on an ingot; when he has coined it, he has it better, but not more." The idea of the Divine sonship comes from the Old Testament prophecy, has its root in Psalm 2 and 72, and in all the strange wonderful literature which recognized in the ideal King upon Zion and upon David's throne One who forevermore has stood and will stand in personal relations with the Father. The Divine sonship is the basis on which Nathanael rears his further faith that he is the King of Israel. He is Messiah-King, because he is "Son of God." The true Israelite recognizes his King (cf. Luke 1:32; Matthew 2:2; John 12:13). We are not bound to believe that Nathanael saw all that Peter subsequently confessed to be the unanimous conviction of the twelve (John 6:69; Matthew 16:16); but the various symphonies of this great confession encompass the Lord from his cradle to the cross. The synoptic narrative is as expressive and convincing as the Johannine.

1:43-51 See the nature of true Christianity, it is following Jesus; devoting ourselves to him, and treading in his steps. Observe the objection Nathanael made. All who desire to profit by the word of God, must beware of prejudices against places, or denominations of men. They should examine for themselves, and they will sometimes find good where they looked for none. Many people are kept from the ways of religion by the unreasonable prejudices they conceive. The best way to remove false notions of religion, is to make trial of it. In Nathanael there was no guile. His profession was not hypocritical. He was not a dissembler, nor dishonest; he was a sound character, a really upright, godly man. Christ knows what men are indeed. Does He know us? Let us desire to know him. Let us seek and pray to be Israelites indeed, in whom is no guile; truly Christians, approved of Christ himself. Some things weak, imperfect, and sinful, are found in all, but hypocrisy belongs not to a believer's character. Jesus witnessed what passed when Nathanael was under the fig-tree. Probably he was then in fervent prayer, seeking direction as to the Hope and Consolation of Israel, where no human eye observed him. This showed him that our Lord knew the secrets of his heart. Through Christ we commune with, and benefit by the holy angels; and things in heaven and things on earth are reconciled and united together.Nathanael answered and saith unto him,.... Being fully convinced of his omniscience by these instances:

Rabbi; that is, master, as it is interpreted in John 1:38, and is not here, because it is there:

thou art the Son of God; not by creation, for this would be to say no more of him, than may be said of every man; nor by adoption, for in that sense Nathanael himself was a Son of God, and many others; nor on account of his wonderful incarnation, which, it is very likely, at this time Nathanael knew nothing of; nor by reason of his resurrection from the dead, which, as yet, was not, and still less might be known by this person; nor because of his office, as Mediator, for this is expressed in the next clause; but by nature, as being of the same essence, and possessed of the same perfections God is; and of which he was convinced by the instances he gave of his omniscience; for it was from hence, and no other consideration, that he concludes him to be the Son of God: wherefore this phrase must be understood of him, not as Mediator, but as a divine person; as the natural, essential, and eternal Son of God; and who is truly and properly God: he adds,

thou art the King of Israel; having in view, no doubt, the passage in Psalm 2:6, where the characters of Son of God, and King of Zion, meet in the same person: not King of Israel, in a literal sense; though he was the son of David, and a descendant of his in a right line, and was of the royal line, and had a legal right to the throne of Israel; and Nathanael might have a view to this, being tinctured with the common national prejudice, that the Messiah would be a temporal prince: but his kingdom is not of this world; nor with observation; but is spiritual; and he is a King over Israel in a spiritual sense, even of saints, whether Jews or Gentiles: whom he conquers by his power, and rules in their hearts by his Spirit, and grace; and protects, and defends them from all their enemies.