Going back to the render to Caesar passage, it is probably more complex than it looks. The group was in the Temple, where there should have been no money but Temple money (remember the money changers?) that is God's money. Bearing in mind the times, and the context - that people were trying to catch Jesus out, it is quite possible that He wanted people to think about what is due to God - and come to the conclusion that it is everything. As in "All things come from Thee, and of Thy own do we render Thee", which is obviously anachronistic. But with spies from the Antonia fortress about, He couldn't exactly say that, could He?

I know that it is argued that it is natural for humans to be altruistic, and that this could be accounted for by evolution. (But I'm just off to a dreaded meeting which may be attended by somwone who, with his partner, operates on opposite principles, acting as if others must provide him with what he wants. He is withholding his maintenance money until we do what he demands. The mills are grinding slowly, but will get him in the end - but in the meantime, I have to deal with him, and it is hard. Sorry about the bad pun, and the thread creep (and there's another one) but it's on my mind.) There are enough selfish people around to show that that has evolutionary advantage, too.

I am reminded of the slogan "the world has enough for everyone's need, but not for everyone's greed". The early church was trying to live by that, but has ended up with robes and marble halls, and shanty towns of believers.