I have question about, Matthew 23:25-26?

I always thought it meant that they ate theft and violence, I mean, that they took it into themselves, that they put sin into themselves. Hence the line about purifying your insides, he means to stop bringing evil into yourselves, then you won't appear evil outside. I mean, what he said about the blessing the cup and plate of theft and violence, he meant that they tried to make it look like the worshiped God, on the outside, they made themselves Godly. His lesson was to not take the evil into themselves to be Godly, not to be Godly by blessing it and using Godly words. Hope that makes some sense. Have a nice day! :) -Meg