Addressing ourselves to our text, let us _I. trace some points of resemblance between Christ and light_; _II. note the conduct which becomes us toward this Light_. The purest and most untarnishable thing in this world is light. Snow is pure, so is ice, water, and air, but each of these will admit of defilement, may be marred and polluted. It is not so with light. Man's hand cannot soil it. No corruption can infest or cleave to it. Nothing can defile its rays or attach pollution to its beams. And such is Christ. All creatures have shown themselves liable to sin and moral taint, but Christ passed through the world of sin as a sunbeam through a house of filth and disease, and came forth as pure and blessed as He sprang from God Himself. He took on Him sin's form, that He might endure sin's due, but sin's stain He never knew. In Bethlehem's manger, He was the holy Child. He lived a human life, oppressed with all its cares and temptations, grew up among its corrupt children, suffered its coarseness, its rebuffs, and its villainies, but with all this He did no sin, neither was guile found in His mouth. He was the spotless Lamb of God, pure; for He was the Light. Again, light is as bright as it is pure. Things are bright in proportion as they are full of light. The day is bright when no clouds shut out the sun. The scenery is bright when illumined by the greatest number of rays. The hope is bright when it is freest from gloomy forebodings and fullest of the light of promise. And such is Christ. He is brightness, "the brightness of the Father's glory," and His office is to dispense brightness. That is the brightest time in the soul when there is most of Christ in it. That is the brightest page on which most of Christ is found. That is the brightest sermon in which most of Christ is heard. That is the brightest life in which most of Christ is seen. That is the brightest world in which Christ is most fully received; and that heart, that home, that church is but confusion and darkness where Christ is not. Light, likewise, is free. It comes without cost, and it comes everywhere. No poverty is so great as to debar from its blessing, nor is there an open crevice, a nook or corner in all this wide world into which it is unwilling to enter, or where it fails to throw its heavenlike smiles. The halls of the great and the huts of the humble does it gild alike, and that without money and without price. As related, it is free, and so is Christ. The command is: "Go ye into all the world, and preach the Gospel to every creature." There is no place nor spot where its beams are not to be diffused, no heart into which it does not struggle for entrance. To the poor as well as to the rich, to Jews as well as to Gentiles is Christ offered equally freely, and on the same terms of free grace to each and all willing to accept Him. He is the true Light, ready to lighten every man that cometh into the world.