Maybe an interesting text to this topic is the apocalypse of Peter that was dated to be written about 200 AD. The Church has condemned this text and tried to distroy it (as they tried with many other early Christian texts in order to establish their own doctrine and interpretation of Jesus), but it was discovered again during archeologic research in Egypt in 1886. In this apocalypse Peter sees Jesus in a vision and talks with him.
The apocalypse of Peter states:
When he had said those things, I saw him seemingly being seized by them. And I said "What do I see, O Lord? That it is you yourself whom they take, and that you are grasping me? Or who is this one, glad and laughing on the tree? And is it another one whose feet and hands they are striking?" The Savior said to me, "He whom you saw on the tree, glad and laughing, this is the living Jesus. But this one into whose hands and feet they drive the nails is his fleshly part, which is the substitute being put to shame, the one who came into being in his likeness. But look at him and me." But I, when I had looked, said "Lord, no one is looking at you. Let us flee this place." But he said to me, "I have told you, 'Leave the blind alone!'. And you, see how they do not know what they are saying. For the son of their glory instead of my servant, they have put to shame."
This at least shows that in the early years after the crucifixion there already has been doubts about if they really crucified Jesus and it basically confirms what is said in the Quran that they did not crucify Jesus nor killed him but it was resembled to them. It has merely been the Church that banned these kind of thoughts in order to establish its own power rather than to lead people on the right way of God. The Quran just reveals those things, people already knew before but their scholars tried to hide from them, just as the the Quran says.
in Surat Ali Imran (3:71) it says:
O People of the Scripture, why do you confuse the truth with falsehood and conceal the truth while you know [it]?
I think this is a good example of something that has been concealed and truth that has been confused by the church.