It is common to find Christians that strongly believe they are to slander and speak evil of Satan. They almost cuss and curse him in vain attempts to defeat him, never realizing that they are doing exactly his will.
Jude 8-10This should be enough of a example for any saint to discontinue the practice of insulting and slandering Satan. The main reason is because such behavior is actually led of Satan, and thus you are using the weapons of Satan against Satan and his kingdom. That is a foolish move and brings failure every time.
8 Likewise also these filthy dreamers defile the flesh, despise dominion, and speak evil of dignities.
9 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.
10 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.
1 Corinthians 10:3-6Railing against and speaking evil of Satan is a carnal way to war against him and his kingdom. This is not the way a saint should be warring; and to do so means that even in that railing accusation or insult against Satan you are actually being led by Satan in that action.
3 For though we walk in the flesh, we do not war after the flesh:
4 (For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)
5 Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ;
6 And having in a readiness to revenge all disobedience, when your obedience is fulfilled.
Romans 8:6-8You must chose today whether you are going to continue in the foolishness of bringing railing accusations and insults against Satan (being carnally minded) or whether you are going to be spiritually minded. If you want to truly overcome Satan as the Scripture teaches then follow the Scriptures below and depart from the carnality of using Satan's weapons against his kingdom and himself. Speak forth the Word of Faith and rebuke the devil according to the Scriptures, do not get caught up using the devices of Satan.
6 For to be carnally minded is death; but to be spiritually minded is life and peace.
7 Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be.
8 So then they that are in the flesh cannot please God.