'Defile' in the Bible

There is nothing outside of a person that is able to defile him [by] going into him. But the things that go out of a person are the things that defile a person."

And he said to them, "So are you also without understanding? Do you not understand that everything [that is] outside that goes into a person [is] not able to defile him?

All these evil [things] come from within and defile a person."