3 Bible Verses about Deception, Satan's Power

As for you, you are children of your Father the Devil, and you are determined to do what your father loves to do. He was a murderer from the first, and did not stand by the truth, because there is no truth in him. Whenever he lies, he does what is natural to him; because he is a liar, and the father of lying.

Yet I fear that it may turn out that, just as the Serpent by his craftiness deceived Eve, so your minds may have lost the loyalty and purity due from you to the Christ. For, if some new-comer is proclaiming a Jesus other than him whom we proclaimed, or if you are receiving a Spirit different from the Spirit which you received, or a Good News different from that which you welcomed, then you are marvelously tolerant! I do not regard myself as in any way inferior to the most eminent Apostles!read more.
Though I am no trained orator, yet I am not without knowledge; indeed we made this perfectly clear to you in every way. Perhaps you say that I did wrong in humbling myself that you might be exalted--I mean because I told you God's Good News without payment. I robbed other churches by taking pay from them, so that I might serve you! And, when I was with you in need, I did not become a burden to any of you; for our Brothers, on coming from Macedonia, supplied my needs. I kept myself, and will keep myself from being an expense to you in any way. As surely as I know anything of the Truth of Christ, this boast, as far as I am concerned, shall not be stopped in any part of Greece. Why? Because I do not love you? God knows that I do! What I am doing now I shall continue to do, that I may cut away the ground from under those who are wishing for some ground for attacking me, so that as regards the thing of which they boast they may appear in their true characters, just as we do. Men of this stamp are false apostles, treacherous workers, disguising themselves as Apostles of Christ! And no wonder; for even Satan disguises himself as an angel of Light.

For at the Coming of the Lord there will be great activity on the part of Satan, in the form of all kinds of deceptive miracles, signs, and marvels, as well as of wicked attempts to delude-- to the ruin of those who are on the path to destruction, because they have never received and loved the Truth to their own Salvation.