But unto you that fear my name shall the Sun of
righteousness arise with healing in his wings; and ye shall go forth, and grow
up as calves of the stall. (Malachi 4:2)
“Sun” is a name appropriate to Christ; for God the Father
has given a much clearer light in the person of Christ than formerly by the
law, and by all the appendages of the law.
And for this reason also is Christ called the light of the
world; not that the fathers wandered as the blind in darkness, but that they
were content with the dawn only, or with the moon and stars. We indeed know how
obscure was the doctrine of the law, so that it may truly be said to be
shadowy. When therefore the heavens became at length opened and clear by means
of the gospel, it was through the rising of the Sun, which brought the full
day; and hence it is the peculiar office of Christ to illuminate.
And on this account it is said in the first chapter of John,
that he was from the beginning the true light, which illuminates every man that
cometh into the world, and yet that it was a light shining in darkness; for
some sparks of reason continue in men, however blinded they are become through
the fall of Adam and the corruption of nature. But Christ is peculiarly called
light with regard to the faithful, whom he delivers from the blindness in which
all are involved by nature, and whom he undertakes to guide by his Spirit.