Acts 1:16

Peter consoles them with prophecy. Nor does he say: As David said, but the Holy Spirit through the mouth of David. What then were these? Whatever the one hundred and eighth psalm contains: of which he will also make mention after a little bit. Speaking …

the scripture had to be fulfilled: The Apostles bring to fulfillment what David had stated was to be done.

"Men and brethren," he says, "this Scripture must needs have been fulfilled, which the Holy Ghost spake before." Why did he not ask Christ to give him some one in the room of Judas? It is better as it is. For in the first place, they were engaged in other things; secondly, of Christ's presence with them, the greatest proof that could be given was this: as He had chosen when He was among them, so did He now being absent. Now this was no small matter for their consolation. But observe how Peter does everything with the common consent; nothing imperiously. And he does not speak thus without a meaning. But observe how he consoles them concerning what had passed. In fact, what had happened had caused them no small consternation. For if there are many now who canvass this circumstance, what may we suppose they had to say then? "This Scripture," says he, "must needs have been fulfilled, which the Holy Ghost spake before." Always he comforts them by the prophecies. So does Christ on all occasions. In the very same way, he shows here that no strange thing had happened, but what had already been foretold. "This Scripture must needs have been fulfilled," he says, which the Holy Ghost by the mouth of David spake before." He does not say, David, but the Spirit through him. See what kind of doctrine the writer has at the very outset of the book. Do you see, that it was not for nothing that I said in the beginning of this work, that this book is the Polity of the Holy Spirit? "Which the Holy Ghost spake before by the mouth of David." Observe how he appropriates him; and that it is an advantage to them, that this was spoken by David, and not by some other Prophet. Here is forethought for providing a teacher; here was the first who ordained a teacher. He did not say, "We are sufficient." So far was he beyond all vain-glory, and he looked to one thing alone. […]

Accordingly, after one of these had been struck off, He commanded the eleven others, on His departure to the Father, to "go and teach all nations, who were to be baptized into the Father, and into the Son, and into the Holy Ghost." [Matt. 28:19] Immediately, therefore, so did the apostles, whom this designation indicates as "the sent."

Twelve constellations of the [stellar] choir shine and cast the brilliance of Olympus on the earth. Note what realization this light reveals: The world is divided by the regions of its four sides; a triune faith calls this [world to belief], in whose name [the …