Acts 2:14-20

Acts 2:14-20. But Peter, standing up with the eleven lifted up his voice, and said unto them, Ye men of Judaea, and all ye that dwell at Jerusalem, be this known unto you, and hearken to my words: for these are not drunken, as ye suppose, seeing it is but the third hour of the day. But this is that which was spoken by the prophet Joel; and it shall come to pass in the last days, saith God, I will pour our of my Spirit upon all flesh: and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams: and on my servants and on my handmaidens I will pour out in those days of my Spirit; and they shall prophesy: and I will shew wonders in heaven above and signs in the earth beneath; blood, and fire, and vapor of smoke: the sun shall be turned into darkness, and the moon into blood, before that great and notable day of the Lord come:

Doubtless this refers first to the siege of Jerusalem, when those strange portents were seen in the heavens, and afterwards to that far greater and more notable day of the Lord, the day of judgment, when the moon shall become as blood, and the sun shall become black as sackcloth of hair.