Charles Spurgeon Commentary Acts 13:31-33

"and he was seen for many days of them that came up with him from Galilee to Jerusalem, who are now his witnesses unto the people. And we bring you good tidings of the promise made unto the fathers, that God hath fulfilled the same unto our children, in that he raised up Jesus; as also it is written in the second psalm, Thou art my Son, this day have I begotten thee." — Acts 13:31-33 (ASV)

And he was seen many days of them which came up with him from Galilee to Jerusalem, who are his witnesses unto the people.

And we declare unto you glad tidings, how that the promise which was made unto the fathers, God hath fulfilled the same unto us their children, in that he hath raised up Jesus again; as it is also written in the second psalm, Thou art my Son, this day have I begotten Thee.

Writing to the Hebrews, Paul quotes this passage from the Psalms to prove Christ's Godhead and everlasting filiation, so that he evidently saw more than one meaning in this portion of divine teaching, and we do not err when we believe that no Scripture is exhausted by a single explanation. The flowers of God's garden bloom, not only double, but sevenfold; they are continually pouring forth fresh fragrance.