Purity comes from the heart

Jesus said:
“Woe to you, scribes and Pharisees, you hypocrites.
You pay tithes of mint and dill and cummin,
and have neglected the weightier things of the law:
judgment and mercy and fidelity.
But these you should have done, without neglecting the others.
Blind guides, who strain out the gnat and swallow the camel!“Woe to
you, scribes and Pharisees, you hypocrites.
You cleanse the outside of cup and dish,
but inside they are full of plunder and self-indulgence.
Blind Pharisee, cleanse first the inside of the cup,
so that the outside also may be clean.”
(Mt 23:23-26)