Charles Spurgeon Commentary James 1:17

"Every good gift and every perfect gift is from above, coming down from the Father of lights, with whom can be no variation, neither shadow that is cast by turning." — James 1:17 (ASV)

And cometh down from the Father of lights, with whom is no variableness, neither shadow of turning.

As every sunbeam comes from the sun, so all grace and virtue must come from God, with whom there is neither parallax nor tropic, as there is with the natural sun. He never declines, he never varies; but he is ever the same. Now, in proof that everything in us comes from God, James says that our very spiritual life comes from God:-

Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness, neither shadow of turning.

Ascribe all evil to yourself, to the world, or to Satan; but ascribe all good to God. Every good gift and every perfect gift – every grain of goodness, every trace of excellence that there is in the world, comes from him; but no evil ever comes from him.

And comes down from the Father of lights, with whom is no variableness, neither shadow of turning.

There is variableness and there is the shadow of turning in the sun, but in that greater Father of lights there is neither parallax nor tropic; he is always the same, and we may go to him with unwavering confidence because he is the same. Oh! What a blessing to such changing creatures as we are to have an unchanging God!

"Of his own will." If you want to know the power of God's will, it never goes towards evil.