Satan's authority over the earth was stripped from him over 2000 years ago. But his ability to deceive is so great that mankind, billions of us alive today, still don't know that these people are literally blinded to the truth. There's so much pain in the path Satan leads them down and its end is death.
Eternal separation from God and all that is good. But Jesus provided a path for us to know the truth and to live in the light of that truth. John 8:31 in the Amplified Bible says so Jesus was saying to the Jews who had believed him, if you abide in My word, continually obeying My teaching and living in accordance with them, then you are truly my disciples.
Then you will know the truth and the truth will set you free. This scripture is for those who believe Jesus. The Bible from Genesis to Revelation is about Jesus. It's about His Word, his message. It is the truth that sets men free. Abiding is the key. Jesus personal promise to you and I is that as we abide, as you live daily in His Word, reading, memorizing, declaring, obeying and praying His Word, you shall know the truth and the truth will set you free.
Satan's deceptions will be broken and revelation light will flood your life. There are times God breaks things off of us and we don't even realize it. So many times I'll look back years later and realize I was starting to think a wrong way or I had been thinking a wrong way all my life.
And God broke that deception through some scripture.