Johannes 1:48

Whence knowest thou me--conscious that his very heart had been read, and at this critical moment more than ever before. Before Philip called thee--showing He knew all that passed between Philip and him at a distance. when . . . under the fig tree, &c.--where retirement for meditation and prayer was not uncommon [LIGHTFOOT]. Thither, probably--hearing that his master's Master had at length appeared, and heaving with mingled eagerness to behold Him and dread of deception--he had retired to pour out his guileless heart for light and guidance, ending with such a prayer as this, "Show me a token for good!" (See on Luk 2:8). Now he has it, "Thou guileless one, that fig tree scene, with all its heaving anxieties, deep pleadings and tremulous hopes--I saw it all." The first words of Jesus had astonished, but this quite overpowered and won him.

The scope and design of this chapter is to confirm our faith in Christ as the eternal Son of God, and the true Messiah and Saviour of the world, that we may be brought to receive him, and rely upon him, as our Prophet, Priest, and King, and to give up ourselves to be ruled, and taught, and saved by him. In order to this, we have here, I. An account given of him by the inspired penman himself, fairly laying down, in the beginning, what he designed his whole book should be the proof of (Joh 1:1-5); and again (Joh 1:10-14); and again, (Joh 1:16-18). II. The testimony of John Baptist concerning him (Joh 1:6-9, and Joh 1:15); but most fully and particularly (v. 19-37). III. His own manifestation of himself to Andrew and Peter (Joh 1:38-42), to Philip and Nathanael (Joh 1:43-51).

1:48-49 Jesus captured Nathanael’s attention by knowing his character (1:47), then he captured his worship by supernaturally knowing his previous actions. Nathanael witnessed a miracle and took a remarkable step of faith.