To act hypocritically; to fail to practice what one preaches.
take on water
To be in an increasingly difficult or risky situation; to falter or be …
in the drink
In or into a body of water.
preach to the choir
To speak as if to convince a person or group of something they already …
preach to deaf ears
To attempt to persuade a party that does not wish to listen or cannot …
preach in the desert
To speak to or persuade a nearly nonexistent audience, or to an audien …