I looked up Malachi 4:2 in Calvin's commentary and he says "Sun" refers to light. Putting that with the context of this talking about our Lord Jesus Christ, we see Christ being refered to as shedding the Light (Sun) of righteousness.

However, if we go back to Genesis chapter one, unlike the context Malachi 4:2, we see no indication that "light" is Jesus Christ.
Unless of course, I have missed it. If so would you please shed some "light" on the passage for me. giggle