Good discussion. How would you address the counterarguments, lucidhawk, that bring up Jesus' mandate to "render to Caesar the things of Caesar's, and to God the things of God", as well as the whole "Romans chapter 13" argument?
One interpretation says: What is God's? Everything. What is Caesar's then? Nothing.
Another interpretation was dividing the secular from the non-secular. That in context the Pharisees were "hypocrites" because they used a Caesar issued coin. (That interpretation is complex)
Yet another interpretation says the coins were essentially Caesar's property they even had his face on it and they should be given back to him. This relies on the whole context of the quote :
"15 Then the Pharisees went out and laid plans to trap him in his words. 16 They sent their disciples to him along with the Herodians. “Teacher,” they said, “we know that you are a man of integrity and that you teach the way of God in accordance with the truth. You aren’t swayed by others, because you pay no attention to who they are. 17 Tell us then, what is your opinion? Is it right to pay the imperial tax[a] to Caesar or not?”
18 But Jesus, knowing their evil intent, said, “You hypocrites, why are you trying to trap me? 19 Show me the coin used for paying the tax.” They brought him a denarius, 20 and he asked them, “Whose image is this? And whose inscription?”
21 “Caesar’s,” they replied.
Then he said to them, “So give back to Caesar what is Caesar’s, and to God what is God’s.”
22 When they heard this, they were amazed. So they left him and went away."
Romans Chapter 13 is a bit more complicated and problematic.. There are a lot of liberty oriented people that do an analysis of Romans 13 online.
The Bible is made up of numerous books written by different people. Someone could just consider Romans 13 as one contradiction of one man (Paul) to the rest of the many anti-statist things in the Bible in of course most Christians won't do this..