Thus the Kingdom was established amongst men by the power of the Holy Ghost[17]. A spiritual Kingdom, but none the less a Kingdom upon earth. A spiritual Kingdom, not established by any power of man, and not belonging to this world; and yet a Kingdom of which men and women and little children were the subjects; "The Kingdom of Heaven" as described by our Lord in His parables and discourses. And the Kingdom having been thus established amongst men, from this time we find a special name was given to it. Henceforth "The Kingdom of Heaven" becomes "the Church." It was a word which our Lord Himself had occasionally used with reference to His Kingdom, as when He said, "Upon this rock I will build my Church" (S. Matt. xvi. 18); but it now became the common expression. Thus when a persecution broke out against the Christians, it was thus described, "As for Saul, he made havoc of the Church" (Acts viii. 3). So Herod "stretched forth his hands to vex certain of the Church" (Acts xii. 1); and when S. Peter was imprisoned, "prayer was made without ceasing of the Church unto God for him" (Acts xii. 5). And throughout the Book of the Acts of the Apostles and the Epistles it is almost always used as the name of the body of believers or subjects of "The Kingdom of Heaven." At the same time, in order that there might be no doubt that the Apostles were simply carrying on their Lord's preaching of "the Gospel of the Kingdom" (S. Matt. iv. 23), and that "The Church" which they founded was in very deed "The Kingdom of Heaven," in certain passages describing the character of their preaching we still find a reference to the Kingdom. Thus, when Philip preached the Gospel to the Samaritans, his work is described in these words, "When they believed Philip preaching the things concerning the Kingdom of God, and the Name of Jesus Christ, they were baptized, both men and women" (Acts viii. 12). And a similar instance occurs respecting the preaching of the great Apostle to the Gentiles, S. Paul. The whole of the latter half of the Book of the Acts of the Apostles is filled with the record of the extension of the Church by the labour of S. Paul in the various lands he visited. And he himself continually uses the word "Church," both in his addresses recorded in the Acts of the Apostles and in his Epistles to the Churches. Thus, for instance, to the Elders whom he had ordained to take charge of the Church at Ephesus, he says, "Feed the Church of God which He hath purchased with His own Blood" (Acts xx. 28). And yet when the general character of his preaching is described, it is still spoken of as the good news of the Kingdom. For to these same Elders S. Paul says, "And now, behold, I know that ye all, among whom I have gone preaching the Kingdom of God, shall see my face no more" (Acts xx. 25). And the last record of him leaves him at Rome "preaching the Kingdom of God, and teaching those things which concern the Lord Jesus Christ, no man forbidding him" (Acts xxviii. 31).