Bede

Therefore Saul said to David: "In two things you will be my son-in-law today," etc. Ignoring the words of Saul, which clearly signify the hypocrisy of scribes and Pharisees with their deceit and fraud, by which they sought to entrap the Lord, let us instead scrutinize more closely the mighty deeds of blessed David, because he became Saul's son-in-law in two things, namely, by killing the giant and by bringing the foreskins of Philistine slain. …

Commentary on Samuel ↗