John Chrysostom : He did not say that it was the Holy Ghost, neither did he expound the words of the prophet; but he merely brings in the prophecy to fight its own battle. As yet also he has said nothing about Judas; and yet it was known to all what a doom and punishment he had undergone; for nothing was more forcible than to argue with them from prophecy: this was more forcible even than facts. For when Christ performed miracles, they often contradicted Him. But when Christ brought forward the prophet, saying, "The Lord said unto my Lord, Sit Thou on my right hand," they were silent, and "no man," we read, "was able to answer Him a word." And on all occasions He Himself also appealed to the Scriptures; for instance, "If he called them gods to whom the word of God came." And in many places one may find this. On this account here also Peter says, "I will pour out of my spirit upon all flesh;" that is, upon the Gentiles also. But he does not yet reveal this, nor give interpretations; indeed, it was better not to do so (as also this obscure saying, "I will show wonders in heaven above," put them the more in fear because it was obscure.) And it would have been more an offence, had it been interpreted from the very first. Then besides, even as plain, he passes over it, wishing to make them regard it as such. But after all, he does interpret to them anon, when he discourses to them upon the resurrection, and after he has paved the way by his discourse. — Homily on Acts 5