Jesus warned them not to show off like the teachers of the Jewish laws did.

Luke 20:45-47; Matthew 23:1-36; Mark 12:38-40

45 While all the other people were listening, Jesus said to his disciples, 46 “Beware that you do not act like the men who teach our Jewish laws. They like to put on long robes and walk around to make people think that they are very important. They also like people to greet them respectfully in the marketplaces. They like to sit in the most important places in the Jewish meeting places. At dinner parties they like to sit in the seats where the most honored people sit. 47 They swindle [MET] the houses and property of widows. Then they pretend they are good, as they pray long prayers publicly. God will certainly punish them very severely.”