Because it reminds them that Jesus died on the cross to forgive Christians (like me) of our sins
it is used for forgiveness in gods name
The cross symbolizes atonement and reminds all Christians of Gods love. The cross can be formed in all different shapes and sizes. Although during the 1st two centuries it reminded christians of public executions.
Christians refused to worship Roman gods.
Christians believe in God and Jesus
gods is a cross
There is no proof that the Egyptian gods exist, just as there is no absolute proof that they do not exist. Because of the historical success of Christianity and Islam, it is simply assumed that, therefore, God exists but the ancient gods of Egypt do not.
Christians believe there is only one God.
Christians refused to worship Roman gods.
There is no real answer to this. Christians worship God and Jesus and Hindus worship a plethora of gods, one god, or no gods at all.
No Christians believe that there is one God and that God can do anything so they don't believe that there needs to be three gods.
mortal sin
They were non Christians. They believed in many different gods. Not in just one god.