Matthew Henry Commentary Luke 20:20-26

"And they watched him, and sent forth spies, who feigned themselves to be righteous, that they might take hold of his speech, so as to deliver him up to the rule and to the authority of the governor. And they asked him, saying, Teacher, we know that thou sayest and teachest rightly, and acceptest not the person [of any], but of a truth teachest the way of God: Is it lawful for us to give tribute unto Caesar, or not? But he perceived their craftiness, and said unto them, Show me a denarius. Whose image and superscription hath it? And they said, Caesar`s. And he said unto them, Then render unto Caesar the things that are Caesar`s, and unto God the things that are God`s. And they were not able to take hold of the saying before the people: and they marvelled at his answer, and held their peace." — Luke 20:20-26 (ASV)

Those who are most crafty in their designs against Christ and his gospel cannot hide them. He did not give a direct answer but reproved them for attempting to ensnare him; and they could not seize upon anything with which to stir up either the governor or the people against him. The wisdom which is from above will direct all who teach the way of God truly to avoid the snares laid for them by wicked men; and will teach our duty to God, to our rulers, and to all people so clearly that opponents will have nothing evil to say about us.