Hi AMR,
I go so far as to note that Satan is the very angel of death at the Pass over. That was Satan on God's leash. However... Anti-Free-Will theism has to account for Sin as "God's Will". This is a direct contradiction of one single verse.
Gal. 2:17 But if seeking to be justified in Christ, we ourselves also have been found sinners, is Christ then a minister of sin? Never may it be!
Also...
There is this...
James 1:13 When tempted, no one should say, "God is tempting me." For God cannot be tempted by evil, nor does He tempt anyone.
These are crucial because one asserts that God never promotes sin. This means that Sin promotes itself... outside of God's will.
Even Jesus (God the Son... Jesus) says... "Not My will but Yours". He resisted the temptation He was feeling to avoid torture and death.
God also doesn't tempt.
This means that either God is using the old God-Father argument... and has clean hands... even though He ordered the hit...
Or... that God is allowing free will out of Love and working "With" "Choice" in a responsive manner.
One view holds to ALL scripture and the other doesn't. This is my base argument and can get turned up if you desire to discuss this.