A battlefield transmitter for staying in touch with the General

John Piper on Ephesians 6, “The Weapon Serves the Wielding Power”-: …I have been impressed more than ever before that God has given us prayer not as an intercom for increased convenience in our secluded cottages, but as a walkie-talkie connecting the general’s headquarters with the transportation line and the field hospital and the front … More A battlefield transmitter for staying in touch with the General