Acts 2:20

20 The sun will be turned into darkness, And the moon into blood, Before the great and glorious day of the Lord comes.

Acts 2:20 Meaning and Commentary

Acts 2:20

The sun shall be turned into darkness
As at the death of Christ, by a total eclipse of it:

and the moon into blood;
as at the opening of the sixth seal, ( Revelation 6:12 )

before that great and notable day of the Lord come;
when he shall come in power and great glory, as he did in a few years after this, to take vengeance on the Jews, and destroy their nation, city, and temple; in which there was a display of his greatness, and power, and which was awful and "terrible" to them, as in Joel it is called; (See Gill on Matthew 24:29).

Acts 2:20 In-Context

18 Yes, and on my servants and on my handmaidens in those days, I will pour out my Spirit, and they will prophesy.
19 I will show wonders in the the sky above, And signs on the eretz beneath; Blood, and fire, and billows of smoke.
20 The sun will be turned into darkness, And the moon into blood, Before the great and glorious day of the Lord comes.
21 It will be, that whoever will call on the name of the Lord will be saved.'
22 "You men of Yisra'el, hear these words. Yeshua of Natzeret, a man approved by God to you by mighty works and wonders and signs which God did by him in the midst of you, even as you yourselves know,
The Hebrew Names Version is in the public domain.