Charles Ellicott Commentary Acts 2:31

"he foreseeing [this] spake of the resurrection of the Christ, that neither was he left unto Hades, nor did his flesh see corruption." — Acts 2:31 (ASV)

He seeing this before. . . .—In the vision of the future which St. Peter thus ascribes to David, the king had been led, as he interprets the words, not only or chiefly to speak out his own hopes, but to utter that which received its fulfilment in the fact of the resurrection. What was conspicuously not true of the historical David was found to be true of the Son of David according to the flesh.