I find the video below very historically and logically correct unless somebody can disproof it.
If this is the actual truth, then Christianity is a religion made up of Egyptian,Greek and Persian mythology inserted into the Bible by the Roman Emperor Constantine and his Priesthood called the Nician Creed.
The Bible is a combination of the Old Testament (God's word or revelation) and New Testament made up of man's words (the biography of Jesus by non eyewitness of Jesus).
The truth is,...
Man's words (new testament) amends and contradicts God's words (the old testament) as per
1) Unity/oneness of God by adopting a trinity of gods.
2) Non violence and payment of taxes to tyranical Romans/governments of the day.
3) Mental bondage by cultivating mythology and blind faith in the Priesthood by banning the use of reason/logic and relegating interpretation of religion to the Priesthood.
Unfortunately Greek mythology has also crept into Islam in the form of the Hadeeth on the Israk Mikraj, which depicts the prophet Mohammad riding a flying horse (like Hercules), on his way to the 7th heaven where Zeus lives. this hadeeth too makes a mockery of Islam when it says that Allah was a flip flop planner of solat/prayer, when He planned 50 solats a day, and the prophet had to haggle with Him to bring it down to 5 solats/prayers a day.
Like Christianity, the 2nd book of man's words(Hadeeth)is used to amend and contradict the 1st book of God's words (Quran).