Then David and his men, about six hundred strong, set out and departed from Keilah, moving from place to place. When Saul was told that David had escaped from Keilah, he declined to go forth.

1 Samuel 22:2
And all who were distressed or indebted or discontented rallied around him, and he became their leader. About four hundred men were with him.

1 Samuel 25:13
And David said to his men, "Strap on your swords!" So David and all his men put on their swords, and about four hundred men followed David, while two hundred stayed with the supplies.

2 Samuel 15:18
and all his servants marched past him--all the Cherethites and Pelethites, and six hundred Gittites who had followed him from Gath.

2 Samuel 15:20
In fact, you arrived only yesterday; should I make you wander around with us today while I do not know where I am going? Go back and take your brothers with you. May the LORD show you loving devotion and faithfulness."

Then David and his men, which were about six hundred, arose and departed out of Keilah, and went wherever they could go. And it was told Saul that David was escaped from Keilah; and he declined to go forth.