(23) If thine eye be evil.--If the spiritual faculty, whose proper work it is to give light, be itself diseased--if it discerns not singly but doubly, and therefore dimly--then the whole life also is shrouded in gloom. If that is the case with the higher life, what will be the state of the lower! If the light is darkened, what will be the state of the region of life which is in itself naturally dark--the region of appetites and passions, which needs the presence of the light to keep them at all in check! "If the light that is in thee be darkness, the darkness how great will it be!"

6:19-24 Worldly-mindedness is a common and fatal symptom of hypocrisy, for by no sin can Satan have a surer and faster hold of the soul, under the cloak of a profession of religion. Something the soul will have, which it looks upon as the best thing; in which it has pleasure and confidence above other things. Christ counsels to make our best things the joys and glories of the other world, those things not seen which are eternal, and to place our happiness in them. There are treasures in heaven. It is our wisdom to give all diligence to make our title to eternal life sure through Jesus Christ, and to look on all things here below, as not worthy to be compared with it, and to be content with nothing short of it. It is happiness above and beyond the changes and chances of time, an inheritance incorruptible. The worldly man is wrong in his first principle; therefore all his reasonings and actions therefrom must be wrong. It is equally to be applied to false religion; that which is deemed light is thick darkness. This is an awful, but a common case; we should therefore carefully examine our leading principles by the word of God, with earnest prayer for the teaching of his Spirit. A man may do some service to two masters, but he can devote himself to the service of no more than one. God requires the whole heart, and will not share it with the world. When two masters oppose each other, no man can serve both. He who holds to the world and loves it, must despise God; he who loves God, must give up the friendship of the world.But if thine eye be evil,.... If thou art of a sordid disposition, of an avaricious temper, if the sin of covetousness prevails over thee,

thy whole body will be full of darkness: thy judgment will be so influenced by that sordid principle, that thou wilt not be able to discern what is agreeable to the law of God, or human reason; what is fitting to be done for thyself, for God, or for thy fellow creatures; all the powers and faculties of thy soul will be enslaved by it, and all be intent upon, and employed in the gratification of it: thy mind will be always sad and sorrowful, harassed and distressed; and thy estate, and condition, will be most miserable and uncomfortable:

if therefore the light that is in thee be darkness, how great is that darkness! as it is in the body, so it is with the mind; as when the eye, the light of the body, is put out by any means, all the members of the body are in entire darkness; so when the light of reason in the mind is so far extinguished by any prevailing iniquity, particularly the sin of covetousness, so that it is wholly influenced and governed by it, what irregular actions is it led into! What deeds of darkness does it perform! and what will be the consequence of it, but utter and eternal darkness, if grace prevent not!