By Richard Sibbes
…before Christ is made life for us, he must be a man first, as in John 6.55, “For my flesh is meat indeed, and my blood is drink indeed.” And the reason he gives life is, that he is also God, being that bread which came down from heaven, of which “whosoever eats shall live forever.” Now this great work of our salvation being of necessity to be performed by an infinite person as God is, who could not die, he, therefore, took upon himself a mortal nature, to open a current to mercy and justice. Therefore his flesh is meat indeed, but the flesh profits nothing without the Spirit which gives life; for there must be a Spirit to seal up all this unto us. As without shedding of blood there is no forgiveness of sins, so without the Spirit sealing these things unto our souls, we can have no comfort of them.
When we speak of spiritual life, he is it that we live for; by him, and in him, and through him we live. Therefore, 1st Corinthians 15:45, “the last Adam is called a life-giving Spirit,” because by that Spirit he gives life to himself, and gives this life to us now to live the life of grace, and shall after give life to our dead bodies at the resurrection.
So he is called “the Sun of righteousness,” for light a heat, because as the sun lightens and warms, so he is the light of the world, as John speaks, “lighting everything that comes into the world,” John 1:9, warming also and cherishing the mass of things, and therefore is called light and life.