Charles Ellicott Commentary Acts 2:30

"Being therefore a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins he would set [one] upon his throne;" — Acts 2:30 (ASV)

Therefore being a prophet.—The words according to the flesh, He would raise up Christ, are missing in many of the best manuscripts. Without them the sentence, though somewhat incomplete, would run as follows: That God had sworn with an oath that from his loins one should sit upon his throne. The words claim for the Psalmist a prophetic foresight of some kind, without defining its measure or clearness. His thoughts went beyond himself to the realization of his hopes in a near or far-off future. As with most other prophets, the precise time, even the manner of time, was hidden from him (1 Peter 1:11).

He would raise up Christ.—The Greek, by using the verb from which comes the word “resurrection,” gives to the verb the definite sense of “raising from the dead.”