And this is the promise (kai auth estin h epaggelia). See 1 John 1:5 for the same idiom with aggelia (message). This is the only instance of epaggelia in the Johannine writings. Here "the promise" is explained to be "the life eternal" ( 1 John 1:2 ). In Acts 1:4 the word is used for the coming of the Holy Spirit. He promised (auto ephggeilato). First aorist middle indicative of epaggellw. Auto (he) is Christ as is seen in Acts 3:3 by ekeino.