“Again Jesus spoke to them, saying, ‘I am the light of the world. Whoever follows me will not walk in darkness, but will have the light of life’” (John 8:12).
“The inference from this doctrine is, He that followeth me, as a traveller follows the light in a dark night, shall not walk in darkness, but shall have the light of life. If Christ be the light, then, (1.) It is our duty to follow him, to submit ourselves to his guidance, and in every thing take directions from him, in the way that leads to happiness. Many follow false lights—ignes fatui, that lead them to destruction; but Christ is the true light. It is not enough to look at this light, and to gaze upon it, but we must follow it, believe in it, and walk in it, for it is a light to our feet, not our eyes only. (2.) It is the happiness of those who follow Christ that they shall not walk in darkness. They shall not be left destitute of those instructions in the way of truth which are necessary to keep them from destroying error, and those directions in the way of duty which are necessary to keep them from damning sin. They shall have the light of life, that knowledge and enjoyment of God which will be to them the light of spiritual life in this world and of everlasting life in the other world, where there will be no death nor darkness. Follow Christ, and we shall undoubtedly be happy in both worlds. Follow Christ, and we shall follow him to heaven” (Henry, Matthew, and Leslie F. Church. Commentary on the Whole Bible: Genesis to Revelation. Grand Rapids, MI: Zondervan Pub. House, 1961).