i think that these preaching supposed to be recorded in hebrew or aramic (languge of jesus ) by his apostles , or do you think that mathew and John and luke wrote in Greek from the begining ?
God’s language is not the speaker or the writer’s language.
If you really believe that God is the God of all people, then the language in which he or his prophet writes is irrelevant.
Do we have that True Gospel which Jesus Christ (pbuh) Preached in Hebrew or Aramaic?
The gospel is not what Jesus wrote.
Jesus did not write anything down as far as we know.
And that is appropriate, because he lived in a highly oral culture, and his ministry was centered around interaction with people, not interaction with pages or his own imagination.
He was engaged in dialogue.
He was not engaged with himself.
This should strengthen our faith in him, not weaken it.
These Gospels which were written down 100 Years after Jesus (pbuh) ascension, circulated anonymously, no names were attached to them until almost 200 and the Christian theologians who came up with the idea of having a New Testament was condemned as heretic.
The issue is irrelevant.
The Gospels come from a time in which the religion was being spread.
Christianity was spread by the word.
The Patristic fathers wrote at the time Christianity was being insitutionalized.
Though these people are not Jesus, we acknowledge that they were inspired by God.
We also believe that certain pagan philosophers and wise men were also inspired by God.
How can Christians rely on the accounts in these Gospels which are the basic Pillars of their Faith?
First of all, unlike Islam, there are no pillars of the Christian faith.
There are cornerstones.
And part of one of them is belief in the content written in the Gospels.
They are quite consistent in their description of Jesus, life, his preaching, his interactions with people, his death, resurrection.
In spite of their coming from a primarily oral culture, much was kept in memory, as it is in other oral cultures around the world and in ancient history.
How can Christians believe what they do?
This is a matter of faith. Not a matter of reason.
Christians need not justify anything to you or anyone else.
A Christian is just as entitled to his integrity as a Muslim.