Charles Ellicott Commentary 1 Samuel 18:20

"And Michal, Saul`s daughter, loved David: and they told Saul, and the thing pleased him." — 1 Samuel 18:20 (ASV)

And Michal Saul’s daughter loved David. —But the love of the younger of the two royal princesses for her father’s brilliant officer gave the unhappy king a fresh excuse to expose David’s life to peril, while at the same time he appeared to be endeavoring to carry out an old formal promise.