the trench and # 09_1SA_26_05 # And David arose, and came to the place where Saul had pitched: and David beheld the place where Saul lay, and Abner the son of Ner, the captain of his host: and Saul lay in the trench, and the people pitched round about him. 
the trench and # 09_1SA_26_07 # So David and Abishai came to the people by night: and, behold, Saul lay sleeping within the trench, and his spear stuck in the ground at his bolster: but Abner and the people lay round about him. 
the trench and # 10_2SA_20_15 # And they came and besieged him in Abel of Bethmaachah, and they cast up a bank against the city, and it stood in the trench: and all the people that [were] with Joab battered the wall, to throw it down.