'Prayers' in the Bible

And they were helped against them, so that the Hagarites, and those with them, were given into their power. For they sent up prayers to God in the fight, and he gave ear to them, because they put their faith in him.

And David put up an altar there to the Lord, offering burned offerings and peace-offerings with prayers to the Lord; and he gave him an answer from heaven, sending fire on the altar of burned offering.