I have never trusted in signs and wonders shown by any religious person after i read the following passage..
2 Thessalonians 2: KJV
"3 Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition; {4} Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, shewing himself that he is God. {5} Remember ye not, that, when I was yet with you, I told you these things? {6} And now ye know what withholdeth that he might be revealed in his time. {7} For the mystery of iniquity doth already work: only he who now letteth will let, until he be taken out of the way. {8} And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming: {9} Even him, whose coming is after the working of Satan with all power and signs and lying wonders, {10} And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved. {11} And for this cause God shall send them strong delusion, that they should believe a lie: {12} That they all might be damned who believed not the truth, but had pleasure in unrighteousness."
So in the end times during the great deception the servants of satan will be able to perform lying signs and wonders to decieve people..
So how can you tell which is from the LORD and which is from the satan ?
We don't have to...
All we have to focus on is what is the person preaching? What is their doctrines? Are they in alignment with Gods Word or are they preaching something that is opposed to Gods Word? The ultimate defense from deception is to be a dedicated consumer of the Scriptures and being One who believes the truth Jesus preached and being One who trusts 100% in what Jesus did on the cross to Redeem us.. If we have the Holy Spirit we shall be guarded from deception, God will not be sending us strong delusion so that we shall believe the lies of the false preachers who do lying signs and wonders..