John 9:5

Thus the day of which I am to avail myself is the time of my mortal life; and the night which is to follow this, is that of my death. (Bible de Vence)

[4.] His business in the world was to enlighten it (v. 5): As long as I am in the world, and that will not be long, I am the light of the world. He had said this before, ch. 8 12. He is the Sun of righteousness, that has not only light in his wings for those that can see, but healing in his wings, or beams, for those that are blind and cannot see, therein far exceeding in virtue that great light which rules by day. Christ would cure this blind man, the representative of a blind world, because he came to be the light of the world, not only to give light, but to give sight. Now this gives us, First, A great encouragement to come to him, as a guiding, quickening, refreshing light. To whom should we look but to him? Which way should we turn our eyes, but to the light? We partake of the sun's light, and so we may of Christ's grace, without money and without price. Secondly, A good example of usefulness in the world. What Christ saith of himself, he saith of his disciples: You are lights in the world, and, if so, Let your light shine. What were candles made for but to burn?

Verses 1-7 Christ cured many who were blind by disease or accident; here he cured one born blind. Thus he showed his power to help in the most desperate cases, and the work of his grace upon the souls of sinners, which gives sight to those blind by nature. This poor man could not see Christ, but Christ saw him. And if we know or apprehend anything of Christ, it is because we were first known of him. Christ says of uncommon calamities, that they are not always to be looked on as special punishments of sin; sometimes they are for the glory of God, and to manifest his works. Our life is our day, in which it concerns us to do the work of the day. We must be busy, and not waste day-time; it will be time to rest when our day is done, for it is but a day. The approach of death should quicken us to improve all our opportunities of doing and getting good. What good we have an opportunity to do, we should do quickly. And he that will never do a good work till there is nothing to be objected against, will leave many a good work for ever undone, ( Ecclesiastes 11:4 ) . Christ magnified his power, in making a blind man to see, doing that which one would think more likely to make a seeing man blind. Human reason cannot judge of the Lord's methods; he uses means and instruments that men despise. Those that would be healed by Christ must be ruled by him. He came back from the pool wondering and wondered at; he came seeing. This represents the benefits in attending on ordinances of Christ's appointment; souls go weak, and come away strengthened; go doubting, and come away satisfied; go mourning, and come away rejoicing; go blind, and come away seeing.