If killing and torture are the tools of the enemy to get conformity or to assert authority, do we really believe God would go into the enemy's tool box because he doesn't have sufficient in his own?
God is sovereign. He gives life and takes it away. Those whom He loves, He chastised and the rest get judged in life and afterwards.
Throughout the entire Bible, we see God's judgments in many forms: death, disaster calamities, troubles, evil, pain and suffering, etc. God has it all in check, He ordained it. Satan acts only within the parameters that God allows him to. Read Job if you don't get that!
Isaiah 45:7
I form the light, and create darkness: I make peace, and create evil: I the Lord do all these things.
Here,
"evil" can be translated as calamities, disaster, troubles, woes.
If you did a word study on judgment, evil, calamities, troubles, punishment, disaster, woes and anything that you deem related to bad things _ even, torture and death, there are thousands of verses and God ordained them all to happen.
And btw, God created Satan's tools and his box for His overall divine plan and purpose. Otherwise, He is not sovereign. CAPISCE?