I alluded to God. He said, 'I want a tithe.' He didn't say, 'If you don't have any money, don't give me any tithes,' and he didn't say 'if you're the richest man in the world give me triple tithes,' so proportionality, that's what's really fair. A percentage.
- Ben Carson
[21:1] As he looked up, Jesus saw the rich putting their gifts into the temple treasury.  He also saw a poor widow put in two very small copper coins.  "I tell you the truth," he said, "this poor widow has put in more than all the others.  All these people gave their gifts out of their wealth; but she out of her poverty put in all she had to live on."
Gospel of Luke, Chapter 21, Verses 1-4
Only 65% of American households end up paying any federal income taxes. The rest of us either don't earn enough to have taxable income or we get our taxes back through credits and deductions, and more than a fifth of non-payers are retirees. When you see videos like the ones linked here from a Fox News anchor or the one quoted from HUD Secretary Ben Carson talking about Americans needing to "have skin in the game" in national tax policy, that's the basis of their argument. So let's take a look at how the government is funded: