Apostle Thomas verifying Christ has really risen. Origin of phrase Doubting Thomas. Mallu Syrian Christian history goes back to Thomas. Christianity is older in India than Puranas. Our Syriac church rituals & language would be more familiar to historical Jesus than the Vatican. 
Christianity is essentially faith spread by Paul the Syrian. He took it north & west from Palestine through Turkey to Rome. Had to give up hard Judaic elements of circumcision, pork and monotheism because unacceptable to Romans. Vatican cult of saints is essentially polytheism.
Muhammad returns these three elements — hard monotheism, no pork and circumcision — to the Semitic people. It’s as appropriate to say Judeo Islamic culture as it is to say Judeo Christian. Perhaps former more appropriate. Christianity with its trinity and saints is like Hinduism.
