When you say “God” in this question, I presume you mean the Christian God of the Bible. In that case, whether or not I would do His will would depend on what I perceived He wanted done. As I recently told Cadry, slaughtering innocent children is something that has been required by God in the Bible, and that is something I would oppose.
How about you, are you with Cadry, willing to kill a baby who has offended in no way beyond simply being born?
Why? Do you presume to know more than God that you should instruct Him? Why did God reject king Saul? What was the result of Saul's disobedience that could have destroyed the whole nation of Israel??