The core of the sun becomes more ordered...heavier more complex elements... the light leaves the star... energy is lost... therefore entropy decrease in the sun. This is lost to the rest of the solar system and beyond...
Life is only possible because the earth is not a closed system.... turn off the sun and all life eventually disintegrates.
The constant energy input in the form of light from the sun has been the hand rolling the ball uphill from an evolutionary perspective.
RE: Entropy vs Christ (A scientific basis for Jesus Christ Part II)