Acts 13:21

"And afterward they desired a king:" and still not a word of their ingratitude, but throughout he speaks of the kindness of God. "And God gave unto them Saul the son of Cis, a man of the tribe of Benjamin, by the space of forty years." And observe, he nowhere mentions right deeds of theirs, but only benefits on God's part: "He chose: Exalted: Suffered their manners:" these are no matters of praise to them: "They asked, He gave."

And God gave them Saul for forty years. I believe, because the Book of Kings does not explicitly state how many years Saul reigned, that the Apostle, speaking popularly, wished to say what common rumor held. But searching more diligently there, as the books of Chronicles also testify, we found that Samuel and Saul governed Israel for forty years. For it says, "In the four hundred and eightieth year after the children of Israel came out of Egypt, Solomon began to build the temple of the LORD, in the fourth year of his reign." When you add to the three hundred and ninety-six years, during which the judges ruled, as indicated in their book, the forty years of David and the four of Solomon, forty remain, of which, as Josephus testifies, Samuel spent twenty and Saul spent the other twenty in governance.

And God gave them Saul, the son of Kish, a man of the tribe of Benjamin, for forty years. And in this place concerning the kingdom of Saul, the apostle seems to have followed popular opinion, as we have already said in the previous book; but what I said there, because Eusebius, following Josephus, assigned forty years to the rule of Samuel and Saul, divided equally between them, subsequently, upon more diligent inspection of the histories of Josephus, I saw that he did not write those forty years of that age but assigned twelve only to Samuel and twenty years to Saul. But also, having more carefully reread the books of Chronicles, I noticed why Eusebius did not want to follow the authority of Josephus in this place, just as he did not in the years of Joshua, to whom Josephus attributes twenty-six years, while he thought it better to annotate twenty-seven. This, therefore, was the reason: because if he followed him, he could by no means have the prescribed number of four hundred and eighty years from the exodus of Israel from Egypt until the temple began to be built, but would find in his codices ten years less of the same age. This he endured because, following the Septuagint interpreters, he neglected to place Ahialon the judge, who ruled the people for ten years after Abessa, in his Chronicles. But realizing that ten years of the prescribed calculation were missing in the sacred history according to the Edition he followed, he took care to add these from his own where it seemed convenient and less contrary to the sacred history. Thus, he adds one year to the times of Joshua, eight to the times of Samuel and Saul, and to complete the tenth number, he includes the fourth year of Solomon's reign, in which the temple began to be built: which whoever follows the Hebrew truth finds should not be done. And what I wrote in the preceding book, that the judges ruled the people from Moses to Samuel for three hundred and ninety-six years, I followed the authority of the Chronicles, not yet noticing that it does not agree with the Hebrew truth.