Acts 2:20 (WEB)
The sun will be turned into darkness, and the moon into blood, before the great and glorious day of the Lord comes.
Catechism · 1
“St. Peter will proclaim their fulfillment on the morning of Pentecost.” — Catechism footnote: Cf. Acts 2:17-21.
Fathers and councils · 2
Jerome
“There was shewn to her also the spot where the Holy Spirit came down upon the souls of the one hundred and twenty believers, thus fulfilling the prophecy of Joel.” — editor's note: Acts ii. 16–21.
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Tertullian
“…then, Christ was announced by the Creator, “who formeth the lightning, and createth the wind, and declareth unto man His Christ,” as the prophet Joel says, since the entire hope of the Jews, not to say of the Gentiles too, was fixed on the manifestation of Christ,—it was demonstrated that they, by their being…” — editor's note: A supposed quotation of Amos iv. 13. See Oehler’s marginal reference. If so, the reference to Joel is either a slip of Tertullian or a corruption of his text;…
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Cross-references · 2
Acts 2:20 takes up the words of Joel 2:31 (20 words in common).
Acts 2:20 takes up the words of Malachi 4:5 (8 words in common).