Bright, think about what is being said here. For God to be the author of sin, He would need to be the cause of it, just as He is the Author of good. We see the two contrasted here, with there respected causes. God is not just the Author of good, He is the Author of life (Acts 3:15). If He caused sin, He would be a house divided against itself.Yes Gods purpose is the author of sin, God isnt the doer of sin.
James:1:13-17 Let no one say when he is tempted, "I am tempted by God"; for God cannot be tempted by evil, nor does He Himself tempt anyone. But each one is tempted when he is drawn away by his own desires and enticed. Then, when desire has conceived, it gives birth to sin; and sin, when it is full-grown, brings forth death. Do not be deceived, my beloved brethren. Every good gift and every perfect gift is from above, and comes down from the Father of lights, with whom there is no variation or shadow of turning.
Please see post #21Gods purpose is the author of sin, God isnt the doer of sin.