The Holy Spirit is the third Person of the Triune Godhead. He is the Helper that Jesus promised his Apostles would come. In Acts 1:4-8, before he ascended to Heaven, Jesus told them “not to leave Jerusalem, but to wait for what the Father had promised” . . . “for John baptized with water, but you will be baptized with the Holy Spirit” . . . “you will receive power when the Holy Spirit has come upon you; and you shall be my witnesses both in Jerusalem, and in all Judea and Samaria, and even to the remotest part of the earth.” The Holy Spirit is equal to the Father and the Son and acts according to his own agency and will. He is our Sanctifier. Jesus affirms this trinity in his high priestly prayer for all his disciples in the world. In John 17:17-21, Jesus prayed, “Sanctify them in the truth; Your word is truth. I do not ask on behalf of these alone, but for those also who believe in Me through their word; that they may all be one; even as You, Father, are in Me and I in ...