Read Acts 13:33 Using Other Translations
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.
this he has fulfilled to us their children by raising Jesus, as also it is written in the second Psalm, "'You are my Son, today I have begotten you.'
and God has now fulfilled it for us, their descendants, by raising Jesus. This is what the second psalm says about Jesus: ‘You are my Son. Today I have become your Father. ’