From Why We Pray:
…the story of the gospel is the restoration of true prayer; it is the story of the restoration of real relationship between man and God. Down through the ages God has called out to man, and his last and ultimate word and call to human beings has been in the person of his only Son. Jesus Christ is God’s ultimate word to man. So the very essence of real prayer is simply answering God in the call that comes to us in Jesus Christ. Prayer is responding to Jesus. We can pray because God is speaking God, because we have been created to respond to him, and because through Jesus Christ we have been redeemed that we might again respond to him.
William Philip, Why We Pray, Crossway, 2015, pg 42.