Why the Christians believe in 3 gods?

The Christians believe in a single God made up of three parts Father Son and Holy Spirit all three are omni present, omni powerful, immutable, and eternal. God is not a man so He can not be restricted to just being a man. Muhammad tried to change the definition of God into something more like himself, he succeeded but failed to create a holy God. Muhammad created a God that gets confused and can't remember his last revelation so the Koran has conflicting ideas and they had to come up with the idea of the later revelation being the true revelation superseding previous revelations, clever people the Imams. The god or allah Muhammad created also violates moral law and does not show mercy. love or compassion