If we go back of the Saviour to the Old Testament, we find a distinct promise of the gift of the Spirit: "And it shall come to pass afterward, that I will pour out my Spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions: and also upon the servants and upon the hand-maids in those days will I pour out my Spirit" (Joel 2:28, 29). This promise is the one quoted by Peter to explain the manifestations on the day of Pentecost to the people drawn together by that wonderful event. From it he delivers by the Spirit a sermon on the claims of our Lord. He shows that they had taken the Lord by wicked hands and had crucified and slain him; that God had raised him from the dead and had exalted him to his right hand; had given him the _promise of the Holy Spirit_; that what they _saw_ and _heard_ was the fulfillment of Joel's promise. This promise was not simply to the apostles, for we read in the preceding chapter that the apostles, and the women and Mary the mother of Jesus, and his brethren to the number of one hundred and twenty all continued with one accord in prayer and supplication. "And when the day of Pentecost was now come, they were all together in one place. And suddenly there came from heaven a sound as of the rushing of a mighty wind, and it filled all the house where they were sitting. And there appeared unto them tongues parting asunder, like as of fire; and it sat upon _each of them_. And they _were all filled_ with the Holy Spirit, and began _to speak_ with other tongues, as the Spirit gave them utterance." This shows that the gift of the Spirit came upon all the followers Jesus left behind him. When the multitude were convicted by the apostle's discourse, they "said unto Peter and the rest of the apostles, Brethren, what shall we do? And Peter said unto them, Repent ye, and be baptized every one of you in the name of Jesus Christ unto the remission of your sins: and ye shall receive the gift of the Holy Spirit. _For to you is the promise_, and to your children, and to all that are afar off, even as many as the Lord our God shall call unto him." What promise! Evidently the promise of God, "I will pour out of my spirit upon all flesh." There is no other promise in the mind of Peter and his hearers, and I know of no other promise the reader can have in mind. This position is amply supported by after-developments. "While Peter yet spake these words, the Holy Spirit fell on all them that _heard the word_. And they of the circumcision that believed were amazed, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Spirit. For they heard them speak with tongues, and magnify God. Then answered Peter, Can any man forbid the water, that these should not be baptized, who have _received the Holy Spirit_ as well as we?" (Acts 10:44-47). This was in fulfillment of