Matthew 22:22

‘And when they heard it, they marvelled, and left him, and went away.'

On hearing His reply His opponents marvelled at the wisdom of His answer. Instead of having caught Him out and shown Him up, it was they who had been shown up for hypocrisy, the hypocrisy of pretending to live only for God, and yet at the same time kowtowing to Caesar by using his coinage and taking advantage of the opportunities that his rule presented for building up wealth, taking advantage of the atmosphere of world wide peace and communication.