We have here the dignity of the soul, the great soul of man, that light which lighteth every man. 1. It is a divine light; it is the candle of the Lord, a candle of his lighting, for it is the inspiration of the Almighty that gives us understanding. He forms the spirit of man within him. It is after the image of God that man is created in knowledge. Conscience, that noble faculty, is God's deputy in the soul; it is a candle not only lighted by him, but lighted for him. The Father of spirits is therefore called the Father of lights. 2. It is a discovering light. By the help of reason we come to know men, to judge of their characters, and dive into their designs; by the help of conscience we come to know ourselves. The spirit of a man has a self-consciousness (Co1 2:11); it searches into the dispositions and affections of the soul, praises what is good, condemns what is otherwise, and judges of the thoughts and intents of the heart. This is the office, this the power, of conscience, which we are therefore concerned to get rightly informed and to keep void of offence.

The spirit of man is the candle of the Lord,.... The rational soul of man is a light set up in him; this is what is commonly called the light of nature; it was a bright and burning light at first, but through sin is become a very feeble one; by which men have only a glimmering view of divine things, of God and his worship, and of what he would have done, or not done; by this light men do but grope after him, if happily they may find him and know his will; it is but like a candle light at best, in comparison of divine revelation, or the Gospel of the grace of God, which has shone out like the sun in its meridian glory; and especially in comparison of the sun of righteousness, Christ Jesus, and the light of the divine Spirit; yet this is a light set up by the Lord, a candle of his; it comes from the Father of lights, he is the author and maintainer of it; it is a spirit and understanding which is by the inspiration of the Almighty; see Gen 2:7;

searching all the inward parts of the belly; or heart; the thoughts, intents, and purposes of it; which are the things of a man that only the spirit of man knows; by this candle, or light, he can look into his own heart, the inmost recesses of it, and reflect upon his thoughts and schemes, and judge in some measure whether right or wrong; there is a conscience in man, which, unless seared, passes sentence on what is in man, or done by him, and either excuses or accuses; see Co1 2:10, Rom 2:14.

The spirit . . . Lord--Men's minds are God's gifts, and thus able to search one another (compare Pro 20:5; Pro 18:8, Pro 18:17; Co1 2:11).