Looking at the natural sun weakens the eye. The more you look at Christ, the Sun of Righteousness, the stronger and clearer will the eye of faith be. Look but at Christ, you will love Him and live on Him. Think on Him continually. Keep the eye constantly upon Christ’s blood, or every blast of temptation will shake you. If you will see sin’s sinfulness, to loathe it and mourn, do not stand looking upon sin, but look upon Christ first, as suffering and satisfying. If you would see your graces, your sanctification, do not stand gazing upon them; but look at Christ’s righteousness in the first place (see the Son and you see all), look at your graces in the second place.
