With all this in view, we can define prayer as a personal, communicative response to the knowledge of God. All human beings have some knowledge of God available to them. At some level, they have an indelible sense that they need something or someone who is on a higher plane and infinitely greater than they are. Prayer is seeking to respond and connect to that being and reality, even if it is no more than calling out into the air for help. That is, I believe, the common denominator of all human prayer.