Because you aren’t following “the Spirit” (aka listen to your religious leaders dogmatically and tell yourself you are correct because you misinterpret your confirmation bias as spiritual guidance).

Give back to Caesar what is Caesar’s and to God what is God’s.” And they were amazed at him.

That’s because it was a sidestep answer. In that religion, all things belong to God. Caesar minted the money using their own gold. So, all roman money belonged to caesar and you had to pay your taxes using roman money. The question is then “what exactly is Caesar’s and whats gods?” The rabbis couldn’t follow up with that question without getting crucified themselves.

That “interpretation” of that story came about after king Charles wanted to raise taxes to raise an army to put down an Irish rebellion. Rightly, parliament didn’t trust him to do that and not use the army on them straight after. So, they refused and said the king has no right to force them to do so.

Then, all of a sudden, as if by magic, king Charles was like “you’ll never guess what I just found in the bible. Yup, it says so right here. God says you all have to give me money. I know, I know, I couldn’t believe my luck when I found it too. Good job I’m a king and wouldn’t lie about such things.”