'Sun of Righteousness' in the Bible

Saying to those who are bound and captured, ‘Go forth,’And to those who are in [spiritual] darkness, ‘Show yourselves [come into the light of the Savior].’They will feed along the roads [on which they travel],And their pastures will be on all the bare heights.

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.