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. A comparison, suggested by its excellence, reminds us how unfit we are to receive this elevated knowledge; for the power of God is no small matter. This great power, he tells us, had been exerted, and in a very extraordinary manner, towards the Ephesians, who were thus laid under constant obligations to follow his calling. By thus extolling the grace of God toward themselves, he intended to check every tendency to despise or dislike the duties of the Christian life. But the splendid encomiums which he pronounces on faith convey to us also this instruction, that it is so admirable a work and gift of God, that no language can do justice to its excellence. Paul is not in the habit of throwing out hyperboles without discrimination; but when he comes to treat of a matter which lies so far beyond this world as faith does, he raises our minds to the admiration of heavenly power.