How does Christianity compare with Stoicism? As far as they can be compared, it seems to me that:
Similarities:
- both see the need of man to reel in his passions, and not be dominated by them
- both de-emphasize the material world. Christianity specifically emphasizes "laying up treasures for the Kingdom of Heaven" instead, while Stoicism emphasizes following and cultivating the "divine particle", the soul that is directing the mortal husk of our flesh, rather than the flesh.
- both acknowledge divinity, but in different forms. For Christians it's the triune personified God, for Stoics it seems from my understanding to be more of a divinity that permeates the whole universe and the logic through which it ticks.
- both value acting virtuously, morally, and justly. Both proscribe anger and vindictive behaviour.
Differences:
- Stoicism, on the other hand emphasizes order and rationality, acting "conformably to nature".
- Christianity has concepts of sin (this might be in Stoicism as well, as a transgression against Nature, but it doesn't have the punitive aspect of Christianity), divine punishment, and penitence. I'm not sure what the Stoic view on afterlife is.
- The Christian answer to this life being difficult seems to me to be that the afterlife will be better. The Stoic answer seems to me to be "just grin and bear it, for either it will soon pass with you, or you were made by Nature to endure it".
- Stoicism puts more emphasis on the shortness and transience of life. Christianity on the afterlife.
- While renouncing worldliness, Stoicism's attitude towards the poor seems to be that they should know their place in the divine universal order, while Christianity (though divine right has been used to justify social order) extols poverty to the level of virtue - "Blessed are you who are poor." explicitly in Luke, selling possessions for Christ, asceticism, etc. An Orthodox song goes (quoting Septuagint Psalm 34:10) "The Rich Have Grown Poor and Gone Hungry".
I have some other ideas about differences but didn't have time to write them down.