“And the children of Israel returned from chasing after the Philistines, and they spoiled their tents.”
King James Version (KJV)
17:51 David took - Hence it appears, that David was not a little man, as many fancy; but a man of considerable bulk and strength, because he was able to manage a giant's sword. The stone threw him down to the earth, and bereaved him of sense and motion; but there remained some life in him, which the sword took away, and so compleated the work. God is greatly glorified, when his proud enemies are cut off with their own sword.
17:55 Whose son - David had been some considerable time dismissed from Saul's court, and was returned home. And therefore it is not strange, if Saul for the present had forgot David. Besides the distemper of Saul's mind might make him forgetful; and that David might be now much changed, both in his countenance and in his habit. I cannot tell - Abner's employment was generally in the camp, when David was at the court; and when Abner was there, he took little notice of a person so much inferior to him as David was.