Christians need to be doers, not hearers only.
And not talkers only.
One example of this is John the Baptist.
Matthew Henry, describing John the Baptist says:
“His spirit, his converse, he doctrine, had something in them which commanded and gained respect; but he did not, as seducers do, give out himself to be some great one. He was more industrious to do good than to appear great; and therefore waived saying any thing of himself till he was legally interrogated. Those speak best for Christ that say least of themselves, whose own works praise them, not their own lips.”
Bold Ambassadors 