Authors:

Like sacrifices, prayer is intended to change man, not God. Its purpose is to cultivate a contrite heart, to promote feelings of humility and inadequacy in man, whilst encouraging reliance on Divine assistance.

"The Authorised Daily Prayer Book" by Immanuel Jakobovits, Centenary Edition, (p. xvi), 1990.
Like sacrifices, prayer is intended to change man, not God. Its purpose is to cultivate a contrite heart, to promote feelings of humility and inadequacy in man, whilst encouraging reliance on Divine assistance.