The Philistines assembled all their troops ¹  at Aphek, while Israel camped at the spring that is in Jezreel.

So David set out and went to the place where Saul was camped. David saw the place where Saul and Abner son of Ner, the general in command of his army, were sleeping. Now Saul was lying in the entrenchment, and the army was camped all around him.