Simply put, the Devil is the Father of Lies and Deception.

"When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it". (John 8:44)

We are all sinners and have all been deceived.

The left, right paradigm is all part of the ploy.

This is why Jesus tells us to pray for each other and love our enemies.

Don't confuse Christians with followers of Christ.