Here is just a part of a powerful rebuke to their religious leaders in Matthew 23 that is as true today as then.
And us? God help us to not be hypocrites!

Matthew 23:
24 Blind guides, who strain out a gnat and swallow a camel!
25 “Woe to you, scribes and Pharisees, hypocrites! For you cleanse the outside of the cup and dish, but inside they are full of extortion and self-indulgence. 26 Blind Pharisee, first cleanse the inside of the cup and dish, that the outside of them may be clean also.