The phrase “Great Deceiver” does not occur in the Bible.
There are two references to “the deceiver”:
For many deceivers have gone out into the world, those who do not confess the coming of Jesus Christ in the flesh. Such a one is the deceiver and the antichrist. (2 John 1:7)
And the great dragon was thrown down, that ancient serpent, who is called the devil and Satan, the deceiver of the whole world—he was thrown down to the earth, and his angels were thrown down with him. (Revelation 12:9)
The first verse says “the deceiver” is anyone who does not accept that Jesus is a real human being — possibly referring to the common Trinitarian belief that Jesus preexisted before his birth and is God himself. The Bible clearly teaches that Jesus is human (1 Timothy 2:5) and that God is his literal father (Luke 1:30-35).
The second verse is in the middle of a highly symbolic passage where the dragon (the deceiver) is a symbol of sin fighting against God’s people.
A third passage which refers to someone who leads people astray is 2 Thessalonians 2, describing the “man of lawlessness”. This passage is discussed in the answer to “Who is the great deceiver in the last days?”
This verse 2 john 1:7 actually prove that Jesus existed before flesh and not that he is only human, Bible clearly teaching that Jesus is God, for example go look whos son is messiah, who is Lord, who and Father are one, “before abraham was, I AM”, father, son and holy ghost are one, word was god and word became flesh, and all other verses that pointing that Jesus was worshipped same way as God should be worship and he rewarded people every time healing them doing all kind of things, and when Jesus said unless you belive that I am He you will die in your sins… whole bible teaches that Jesus Christ is God, from old testament to new. Jesus is God and Son of God, both. and 1 tim 2:5 there is one mediator between God and man, that man is Jesus Christ – simple and easy answer : Jesus Christ is living, walking word of God and between you and God is his Word. how would you then know Father if you dont listen to his Word, by Word you know God.
Second one is clearly shown as satan or allah of quran who boasts that he is deceiver, God doesnt need to deceive, cheat, scam to make people belive in him, its clear.
The real decievers are more than just Islam but also Catholicism, LDS and most western “denominations”/branches/sects of Christianity. All of them have altered, mislead, and outright changed aspects of REAL Christianity.