Why should you trust anything written in either? The collection of stories, myths and fables that you know as the Bible didn't exist while Jesus was alive, nor did Jesus ever claim to be "God" and for you to claim he did is heresy. The "Bible" you put so much faith in was written by pagans for pagans but does include much older writings such as the prophesies, etc. Some of those writings may well be true, although altered substantially, while others are outright copies of older stories or greatly modified myths. The Apostles wrote none of the "Books" attributed to their names. And you even chose a picture showing the "white" Jesus who never existed fighting with "Satan", another figure that never existed. At least Jesus, a darker than white Jewish man, almost certainly lived, but the entire idea of Satan, of an eternal Heaven and eternal punishment in Hell are all merely Greek ideas adapted by Hellenized Jews and later by Paul, the founder of what you consider the Church; Jesus had nothing to do with said "Church" since he and his Apostles had been dead for generations, centuries, actually, when a group of Bishops met in 326 AD to decide just which of the hundreds of stories and writing about Jesus best suited their narrative, thus keeping them in power. The same applies to the Qur''an, written from scraps of papyrus, leather and even pieces of wood, gathered generations after Muhammad's death and complied into a single collection. There is only One God so just how could Muslims and Christians and Jews worship different Gods? They can't but you seem too deep into what the "Church" teaches rather than researching and finding truth on your own.
BTW, Jesus said that Heaven comes from withing and is spread upon the face of the earth and if someone tells you they've found a place called Heaven then that person is a liar trying to lead people astray from the true path to God, the Way Jesus taught us to live. Jesus IS NOT the WAY; he came and showed the Way but never claimed he'd save anyone. That, finding God, is up to each person.
Oh, and Jesus never claimed to be the one and only begotten son. He said that all people are Children of the Light, if they choose to follow God. Which he did. And his "Second Coming" is yet another lie of the pagan Church that worship's Jesus rather than God. He's not coming back to save you, that's another myth the early Church used just as all the other pagan myths it chose to keep followers in line and the money and power coming in.
