baptism in the holy spirit
Given at Pentecost, it is the promise of the Father, sent by Jesus after His Ascension, to empower the Church to preach the Gospel through 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).