King James Version
But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking.New International Version
And when you pray, do not keep on babbling like pagans, for they think they will be heard because of their many words.Catholic Public Domain Version
And when praying, do not choose many words, as the pagans do. For they think that by their excess of words they might be heeded