THE PRESENT CHRISTIANs ARE PAGANISH?

The present Christian they called it self Christians actually they are not Issa Allah Salaam believers they are Rome peoples who they adopted Christian name but still they are in Pagan religion (Christian name also not come from Issa belivers) and Pagan religion they believes two gods and they believes Christmas trees (they believe these trees has some kind of spiritual strength to fight with evils and they alive for ever) and santa, Hallowing etc... all date and calenders came from Pagans and also 25th December is not Issa Allah Salaam (They called Jesus) birth day ( This date Pagan god date) actually Issa Allah Salaam born in summer time Quran has this evidence when Merriam Allah Salaam (Mary) gave the birth (Sura Al-Imran-3) that was hot day time and there was fruits on the tree for eat and river water for drink so these present Christian religion is actually pagan and