This man came (historic, ἦλθε) for witness, that he might bear witness concerning the Light. The entire prophetic dispensation is thus characterized. That which the Baptist did, Malachi, Isaiah, Elijah, Hosea, Moses, had done in their day.
He came, and by penetrating insight and burning word, by flashes of moral revelation and intense earnestness, "bare witness concerning the Light" which was ever shining into the darkness. His aim and theirs was to prevent the forces of darkness from suppressing or absorbing the light.
He came to sting the apathy and disturb the self-complacency of the darkness. He came to interpret the fact of the Light which was shining but not apprehended; and so did all the prophetic ministry of which he was the latest and most illustrious exponent.
He came to assert the meaning for man of all God's perfections; to call conscience from its death sleep; to draw distinctions of tremendous significance between moral and ceremonial obedience; to exalt obedience above sacrifice, and works meet for repentance above Abrahamic privilege; to warn by lurid threatenings of a fiery wrath and a terrible curse which would fall on the disobedient, though consecrated, people.
In this he was but the last of a goodly fellowship of prophets who bore witness to the Light of life which had its being in the Eternal Logos of God. He came, as they all had come, with a view of producing results far greater than, as a matter of fact, they have actually achieved.
He came to bear such testimony that all through him, i.e. by the force of his appeal or by the fierce glow thus cast upon the perils and follies of the hour, might believe—might realize the full significance of the Light which they had hitherto refused to accept.
The greatness of this expectation corresponds with the hope which the ministry of Jesus failed also to realize (Matthew 11:9-14). The splendid ministry of this "burning and shining lamp" might, it would seem, have brought all Israel to acknowledge Christ as the Light of the world; but "the darkness apprehended it not."
The entire prophetic dispensation, the testimony which the priestly services and sacrifices bore to the evil of sin and to the awfulness of righteousness, as well as the condemnation of the follies and pleasures of the world, involved in John the Baptist's ascetic profession, might have roused all Israel to believe in the Light.
He gathered together all the forces of the Mosaic, prophetic, Levitical, Essenic ministries to bear on the people. Everything that Law could do was done to reveal the Light; but "all" did not believe, for "the darkness apprehended it not."