Then the scribes and the chief priests looked for a way to get their hands on Him that very hour, because they knew He had told this parable against them, but they feared the people. They watched closely and sent spies who pretended to be righteous, so they could catch Him in what He said, to hand Him over to the governor's rule and authority. They questioned Him, "Teacher, we know that You speak and teach correctly, and You don't show partiality, but teach truthfully the way of God. Is it lawful for us to pay taxes to Caesar or not?" But detecting their craftiness, He said to them, "Show Me a denarius. Whose image and inscription does it have?" "Caesar's," they said. "Well then," He told them, "give back to Caesar the things that are Caesar's and to God the things that are God's." They were not able to catch Him in what He said in public, and being amazed at His answer, they became silent.
Luke 20:19-26 (HCSB)