At midday, O king, I saw in the way a light from heaven, above the brightness of the sun, shining round about me and them which journeyed with me.

People's New Testament

26:12-14 As I went to Damascus. Compare Ac 9:1-2. This is the third account of Paul's conversion, the first being in Ac 9:3-18, and the second in Ac 22:4-16. There are a few new details given here: (1) The over-powering glory of the Lord is specially dwelt upon here; (2) we are here told that the voice heard was in the Hebrew language (he was now speaking Greek to King Agrippa).

Wesley's Notes

26:13 O King - Most seasonably, in the height of the narration, does he thus fix the king's attention. Above the brightness of the sun - And no marvel. For what is the brightness of this created sun, to the Sun of righteousness, the brightness of the Father's glory?

Matthew Henry's Concise Commentary

26:12-23 Paul was made a Christian by Divine power; by a revelation of Christ both to him and in him; when in the full career of his sin. He was made a minister by Divine authority: the same Jesus who appeared to him in that glorious light, ordered him to preach the gospel to the Gentiles. A world that sits in darkness must be enlightened; those must be brought to know the things that belong to their everlasting peace, who are yet ignorant of them. A world that lies in wickedness must be sanctified and reformed; it is not enough for them to have their eyes opened, they must have their hearts renewed; not enough to be turned from darkness to light, but they must be turned from the power of Satan unto God. All who are turned from sin to God, are not only pardoned, but have a grant of a rich inheritance. The forgiveness of sins makes way for this. None can be happy who are not holy; and to be saints in heaven we must be first saints on earth. We are made holy, and saved by faith in Christ; by which we rely upon Christ as the Lord our Righteousness, and give up ourselves to him as the Lord our Ruler; by this we receive the remission of sins, the gift of the Holy Ghost, and eternal life. The cross of Christ was a stumbling-block to the Jews, and they were in a rage at Paul's preaching the fulfilling of the Old Testament predictions. Christ should be the first that should rise from the dead; the Head or principal One. Also, it was foretold by the prophets, that the Gentiles should be brought to the knowledge of God by the Messiah; and what in this could the Jews justly be displeased at? Thus the true convert can give a reason of his hope, and a good account of the change manifest in him. Yet for going about and calling on men thus to repent and to be converted, vast numbers have been blamed and persecuted.