Nathanael answered and saith unto him, Rabbi, thou art the Son of God; thou art the King of Israel.

People's New Testament

1:49 Thou art the Son of God; thou art the King of Israel. Philip had said, Jesus, the son of Joseph (Joh 1:45), as he supposed, but Nathanael, convinced, declared him the Son of God. This is the first confession of the divinity of Jesus.

Wesley's Notes

1:49 Nathanael answered - Happy are they that are ready to believe, swift to receive the truth and grace of God. Thou art the Son of God - So he acknowledges now more than he had heard from Philip: The Son of God, the king of Israel - A confession both of the person and office of Christ.

Jamieson-Fausset-Brown Bible Commentary

49. Son of God . King of Israel-the one denoting His person, the other His office. How much loftier this than anything Philip had said to him! But just as the earth's vital powers, the longer they are frost-bound, take the greater spring when at length set free, so souls, like Nathanael and Thomas (see on [1767]Joh 20:28), the outgoings of whose faith are hindered for a time, take the start of their more easy-going brethren when loosed and let go.

Matthew Henry's Concise Commentary

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.