Then he goes on with the prophecy, which has in it also something terrible. “And I will show wonders in heaven above, and signs” [“in the earth beneath”]. (v. 19.) In these words he speaks both of the judgment to come, and of the taking of Jerusalem. “Blood and fire, and vapor of smoke.” Observe how he describes the capture. “The sun shall be turned into darkness, and the moon into blood.” (v. 20.) This results from the (διαθέσεως) internal affection of the sufferers. It is said, indeed, that many such phenomena actually did occur in the sky, as Josephus attests. At the same time the Apostle strikes fear into them, by reminding them of the darkness which had lately occurred, and leading them to expect things to come. “Before that great and notable day of the Lord come.” For be not confident, he means to say, because at present you sin with impunity. For these things are the prelude of a certain great and dreadful day. Do you see how he made their souls to quake and melt within them, and turned their laughter into pleading for acquittal? For if these things are the prelude of that day, it follows that the extreme of danger is impending. But what next? He again lets them take breath, adding, “And it shall come to pass, that whosoever shall call upon the name of the Lord, shall be saved.” (Rom. x. 13.) This is said concerning Christ, as Paul affirms, but Peter does not venture as yet to reveal this.