John Gill

Be not ye therefore partakers with them. In their sins, and acts of disobedience; by keeping needless company with them; by abetting and encouraging sinful practices; by conniving at them, and not reproving for them; or by committing the same things. Be not ye therefore partakers with them. In their sins, and acts of disobedience; by keeping needless company with them; by abetting and encouraging sinful practices; by conniving at them, and not reproving for them; or by committing the same things. Ephesians 5:8 eph 5:8 eph 5:8 eph 5:8For ye were sometimes darkness,.... Not only dark, but darkness itself; exceeding blind, dark, and ignorant, respecting spiritual things; so the Gentiles were wont to be called by the Jews, "darkness" (k) itself; of this darkness; see Gill on Eph 4:18. But now are ye light in the Lord; either in, or by the Lord Jesus Christ, the light of men, from whom all spiritual light comes; or by the Lord the Spirit, by whom the eyes of their understandings were enlightened, to see the exceeding sinfulness of sin, in heart and life; the insufficiency of their own righteousness and moral virtues, to justify them before God; and the true and right way of righteousness, life and salvation by Christ; and to have some light into the several doctrines of the Gospel, and even a glimpse of the invisible glories and realities of another world: and this light is so great, that they are not only said to be enlightened, but to be light itself; and this they have not of, and from themselves, but the Lord; and therefore should walk as children of light; not in sins, which are works of darkness, but in faith, truth, and holiness. (k) Tzeror Hammor, fol. 1. 2.