Matthew Poole and continuators on Acts 26:18

18 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 that are sanctified by faith that is in me.

The eyes of their minds, that they might know God, and their duty towards him. Our Saviour assures Paul, that he should do that for the Souls of men, which he should find effected in his own body, being made to see. Now tho this be only the work of God, yet to honour the Ministry, he is pleased to attribute it unto his Ministers, as being the instruments he ordinarily worketh it by; and are hence called co-workers with God, 2 Cor. 6.1.

This was signified by the glorious light which came from the body of our glorified Redeemer, which appeared unto him.

So are all sins; for by them Satan Rules in the Children of disobedience, Ephes. 2 2.

Thereby intimating, that their former sins (how grievous soever) should not hinder their Salvation, who received the Gospel in the love and power of it.

By Faith which purifieth the heart: But this may be referred, either to our being sanctified, or to our receiving of the Inheritance, for both are by Faith; and as without Faith we are no better, and do no better, so we shall receive no better than other men.

Marginal references: Isa. 35.5. & 42.7. Eph. 1.18.; Col. 1.13. 1 Pet. 2.25.