{5} To open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me.

(5) The end of the Gospel is to save those who are brought to the knowledge of Christ, and are justified and sanctified in him, being laid hold on by faith.

Wesley's Notes

26:18 To open - He opens them, who sends Paul; and he does it by Paul who is sent; their eyes - Both of the Jews and Gentiles: that they may turn - Through the power of the Almighty, from the spiritual darkness wherein they were involved, to the light of Divine knowledge and holiness, and from the power of Satan, who now holds them in sin, guilt, and misery, to the love and happy service of God: that they may receive through faith - (He seems to place the same blessings in a fuller light,) pardon, holiness, and glory.

Scofield Reference Notes

Margin sins

Sin. See Scofield Note: "Rom 3:23".

Jamieson-Fausset-Brown Bible Commentary

18. To open their eyes, and to turn them from darkness to light-rather, "that they may turn" (as in Ac 26:20), that is, as the effect of their eyes being opened. The whole passage leans upon Isa 61:1 (Lu 4:18).

and from the power of Satan-Note the connection here between being "turned from darkness" and "from the power of Satan," whose whole power over men lies in keeping them in the dark: hence he is called "the ruler of the darkness of this world." See on [2120]2Co 4:4.

that they may receive forgiveness . and inheritance among the sanctified by faith that is in me-Note: Faith is here made the instrument of salvation at once in its first stage, forgiveness, and its last, admission to the home of the sanctified; and the faith which introduces the soul to all this is emphatically declared by the glorified Redeemer to rest upon Himself-"FAITH, even THAT WHICH IS IN Me." And who that believes this can refrain from casting his crown before Him or resist offering Him supreme worship?

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.