[kosta50]

Satan is as completely subject to the Will of God as any other creature. Period. Because he knows that, he already knows his bid to destroy God's beloved is already doomed; he knows his time is growing short...The mystery is that the satan performs a role in God's providential economy, in His Plan for the resurrection of man and creation at the End of Days

I disagree. Christianity does not consider Satan a necessary "soteriological" factor, let alone part of the divine Economy of our salvation! Nor do we consider Satan to be God's obedient servant! In Chrisitanity, Satan is a fallen angel who rebelled (and rebells) against God.

Satan is as completely subject to the Will of God as any other creature. Period

Being subject to the will of God doesn't mean God is willing to stop evil.

[Alamo-Girl]

To the contrary:

Likewise also these [filthy] dreamers defile the flesh, despise dominion, and speak evil of dignities. Yet Michael the archangel, when contending with the devil he disputed about the body of Moses, durst not bring against him a railing accusation, but said, The Lord rebuke thee. But these speak evil of those things which they know not: but what they know naturally, as brute beasts, in those things they corrupt themselves. Woe unto them! for they have gone in the way of Cain, and ran greedily after the error of Balaam for reward, and perished in the gainsaying of Core. – Jude 1:8-11