(34) The light of the body is the eye.--See Note on Matthew 6:22. In some respects the sequence of thought in St. Luke differs from that in St. Matthew, and seems somewhat closer. In the Sermon on the Mount, the company of Christ's disciples are the light, and each of them is as the lamp on its proper stand, and the teaching as to the "light of the body," and the corresponding "'eye" of the soul, is separated from that illustration by our Lord's comment on the corrupt traditional interpretations of the scribes. Here the two thoughts are brought into close proximity. The moral sense, the "vision and the faculty divine" that has its intuitions of eternal truths, this is the light which is so set that those who "are entering in" (this feature, as in Luke 8:16, is peculiar to St. Luke)--the seekers and inquirers who are drawn to look in, as it were, upon the house of Christ's Church, the "unlearned" or "unbelievers" of 1Corinthians 14:23--may see the light and turn to it.

Verses 34, 35. - The light of the body is the eye: therefore when thine eye is single, thy whole body also is full of light; but when thine eye is evil, thy body also is full of darkness. Take heed therefore that the light which is in thee be not darkness. He goes on, though, with his solemn warning words. Plainly visible though the sign would be - shining bright as a lighted lamp set on high - still it, too, was possible to miss seeing it. If the eye, the organ of the body which perceives the light, be sound and healthy, then the illumination given by the lamp is seen, and the whole body, so to speak, is full of light; but if the eye was diseased, purblind, no bright shining light would be seen - the body then would be full of darkness. The word rendered "single" denotes the eye in its natural healthy state; that translated "evil" speaks of the eye as diseased, as incapable of perceiving the rays of light. The imagery to those Orientals, accustomed to parable and allegory in the stories and poems they had listened to from their childhood, was easily translated into the language of everyday life. If they gave way to passion, jealousy, prejudice, impurity, lawlessness in its hundred forms, then for them the spiritual eye of the soul would become diseased, and therefore incapable of rightly discerning any heavenly sign. It was this danger that the Master was pointing out to the crowd. "Ah!" he seems to say, "you ask a heavenly sign which will substantiate my lofty claims; that sign, in a grander and more stately form than ever you have dreamed of, shall, indeed, be given you. Have no fear on that score; rather dread that blindness, the punishment of a hard and evil heart, will come upon you, and render you incapable of seeing the sign you ask for, and which I mean to give you." He was speaking still of his resurrection. Alas, for them! the blindness of which he warned them was the unhappy lot, we know, of very many of those listening then.

11:29-36 Christ promised that there should be one sign more given, even the sign of Jonah the prophet; which in Matthew is explained, as meaning the resurrection of Christ; and he warned them to improve this sign. But though Christ himself were the constant preacher in any congregation, and worked miracles daily among them, yet unless his grace humbled their hearts, they would not profit by his word. Let us not desire more evidence and fuller teaching than the Lord is pleased to afford us. We should pray without ceasing that our hearts and understandings may be opened, that we may profit by the light we enjoy. And especially take heed that the light which is in us be not darkness; for if our leading principles be wrong, our judgment and practice must become more so.The light of the body is the eye,.... The Vulgate Latin and all the eastern versions read "the light of thy body is thine eye". The sense is, that as the eye gives light, to the body, and the several members of it, by which they are guided and directed; so the understanding is the light of the soul, and the guide to all the powers and faculties of it;

therefore when thine eye is single, thy whole body also is full of light: as when the eye is free from vicious humours, and its sight is clear, the whole body reaps the advantage of it, and is perfectly illuminated by it; so when the eye of the understanding is opened and enlightened by the Spirit of God, into the truths of the Gospel, and a single regard is had unto them, and to the glory of Christ in them, the whole soul is filled with light, joy, and comfort:

but when thine eye is evil, thy body also is full of darkness; as when the eye of the body is attended with any bad humours that hinder the sight, all the members of it are in darkness; so, when the understanding is darkened through the blindness and ignorance there is in men, with respect to Gospel truths, all the powers and faculties of the soul are in a very miserable and uncomfortable condition. The 35th and 36th verses are not in Beza's most ancient copy.