But the destruction of His foes is not the only, nor the chief result of His Ascension. When the King ascended the Throne of "The Kingdom of Heaven," "He led captivity captive and gave gifts unto men" (Eph. iv. 8), even the gifts by which men might be brought to submit themselves to His spiritual rule, and be saved by Him. And inasmuch as only the Holy Ghost can change the heart, and make men such as He had described His subjects to be, He had previously explained to His Apostles that there was one gift on which all future success depended, the gift of "the Comforter which is the Holy Ghost" (S. John xiv. 26). And He had assured them, "It is expedient for you that I go away; for if I go not away, the Comforter will not come unto you; but if I depart, I will send Him unto you" (S. John xvi. 7). They did not understand the words at the time when they were spoken; but at the time of the Ascension they knew that they were to "wait for the promise of the Father" (Acts i. 4), of which He had told them; and to "tarry in the city of Jerusalem until" they were "endued with power from on high" (S. Luke xxiv. 49). Ten days of watching, suspense, and prayer followed. At last, "when the day of Pentecost was fully come, suddenly there came a sound from Heaven, as of a rushing mighty wind, and they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance" (Acts ii. 1-4). Hitherto the little band of believers had numbered "about an hundred and twenty" (Acts i. 15) in Jerusalem. But now that the Holy Ghost was given, who could move the hearts of men and change them, the Apostles found themselves endued with the promised "power from on high," which should give weight to their testimony; and the vast multitude, who assembled to listen to S. Peter's sermon, were "pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?" (Acts ii. 37). The previous instructions which had been given them about "the things pertaining to the Kingdom" (Acts i. 3) were now to be put into practice. The Apostles had the answer ready: "Repent, and be baptized every one of you in the Name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost. For the promise"--of the Holy Ghost, who alone can change the heart and make men to be born again as the children of God--is not to us only, said the Apostle, but "is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call. And with many other words," besides those which are recorded, "did he testify" to the truth about the Lord Jesus being Messiah, the King; and with such force did he "exhort, saying, Save yourselves from this untoward generation," that three thousand "gladly received his word and were baptized" (Acts ii. 38-41), as subjects of "The Kingdom of Heaven."