Acts 13:20

These judges were persons deputed by God to govern and deliver that people; their commission was attested usually by some extraordinary thing done by them, and their power (as being mediately from God) was absolute. The computation of years here mentioned hath been very much controverted. That which hath the greatest probability with it, is, either, first, to have recourse to Acts 13:17, and begin this era there, with God's choosing of their fathers; and ending it at the time of the decision of the land by lot, as Acts 13:19; for from the birth of Isaac, to this distribution of the land, are reckoned four hundred and forty-seven years; which may well be said here, about four hundred and fifty years: but then the sense is, after that such things mentioned in Acts 13:17 were done; which were in the compass of four hundred and fifty years, God then gave them judges. Or, as others do refer these words to what follows, and begin the era or computation from the going of the children of Israel out of Egypt, and ending it at the expulsion of the Jebusites out of Jerusalem, which may make up this account. But then this passage of St. Paul is not intended to show how long the judges ruled, but when it was, or about what time that they ruled; as also to show what a long time it took up to gain that people a quiet possession of that promised inheritance, their sins still keeping good things from them.