Given at Pentecost, it is the promise of the Father, sent by Jesus after His Ascension, to empower the Church to preach the Gospel throughout the whole earth (Joel 2:28-29; Matthew 3:11; Mark 16:17; Acts 1:5,2:1-4, 17, 38-39, 8:14-17, 10:38, 44-47, 11:15-17, 19:1-6).
