And in praying use not vain repetitions, as the Gentiles do: for they think that they shall be heard for their much speaking.
A vain-glorious ostentation in prayer was condemned by our Saviour in the former verse; here a vain-glorious multiplicity of words, by idle tautologies and impetinent repetitions, is condemned also; after the manner of the heathens, who expected to have their prayers granted by God, for the multiplicity of words used by themselves.
7. Use not vain repetitions He reproves another fault in prayer, a multiplicity of words. There are two words used, but in the same sense: for βαττολογία is “a superfluous and affected repetition,” and πολυλογία is “unmeaning talk.” Christ reproves the folly of those who, with the view of persuading and entreating God, pour out a superfluity of words.
But when ye pray, use not vain repetitions, as the heathen [do]: for they think that they shall be heard for their much speaking. (c) Long prayers are not condemned, but vain, needless, and superstitious ones.