When his servants told David these words, it pleased David well to be the king's son-in-law. The days were not expired;
"Before the time expired"  (1 Samuel 18:26).  This indicates that Saul, at the last minute, had changed the proposition by placing a deadline upon it, requiring that it be done in a specified length of time, thus increasing the danger to David, and increasing the possibility that David might be tempted into doing something rash.