“Prayer is but another way of receiving sustenance and strength and vigour and power. Prayer not only means petitions; prayer means, primarily, communion and fellowship with God. Christ says: “Behold, I stand at the door and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me.” This is not an evangelistic statement. It is addressed to the Church, to Christian believers. He is ready to come in and to sup with us. That is the meaning of prayer. It is not just sending up your petitions and taking your requests to God. It means opening the door, and Christ comes in and sits at the other side of the table and has a meal with you and you talk as you are taking the meal. Fellowship and communion! And as you are talking to Him and supping with Him you are receiving strength and power from Him. You are making your requests known unto Him, and He is telling you things about Himself and His concern for you and His care for you. Prayer is communion, having fellowship, having a conversation with God the Father, God the Son, and God the Holy Spirit. That is the way to be strong.”
The Christian Soldier, p. 81, 82 (Baker Book House)