Why Socrates, Gandhi and Jesus are considered great?

Socrates said I know Nothing, not even my own ignorance !

Gandhi said I had committed mistakes. He was frank to admit his mistakes.

Jesus exhorted his followers to " forgive thine enemies seventy times seven". When crucified, he forgave his enemies.

" This is my blood on the Covenant, it has been shed on behalf of those for forgiveness of sins".

NO wonder he is called Bhagavan Yesu !