having the eyes of your hearts enlightened, that you may know what is the hope of his calling, and what are the riches of the glory of his inheritance in the saints,
understanding--The oldest manuscripts, versions, and Fathers, read "heart." Compare the contrary state of unbelieving, the heart being in fault (Eph 4:18; Mat 13:15). Translate, "Having the eyes of your heart enlightened" (Eph 5:14; Mat 4:16). The first effect of the Spirit moving in the new creation, as in the original physical creation (Gen 1:3; Co2 4:6).
Our apostle proceeds in this verse, and to the end of the chapter, in a very affectionate and fervent prayer, on the behalf of the Ephesians; namely, that the blessed Spirit of God, the author of all divine illumination, would farther open the eyes of their understanding, formerly shut up in heathenish blindness and darkness, that so they might know, 1.
18. The eyes of your understanding being enlightened. The eyes of your heart is the rendering of the Vulgate, which is supported by some Greek manuscripts. The difference is immaterial, for the Hebrews frequently employ it to denote the rational powers of the soul, though more strictly, being the seat of the affections, it means the will or desire; but I have preferred the ordinary translation. And what the riches.