Matt.6.7  "And in praying do not heap up empty phrases as the Gentiles do; for they think that they will be heard for their many words.
Rom.12.20  No, "if your enemy is hungry, feed him; if he is thirsty, give him drink; for by so doing you will heap burning coals upon his head."

Hyper-concordance v1.1, by Sean Boisen. Scripture verses taken from the Revised Standard Version, copyright 1952, 1971.