'Middle' in the Bible

So Gideon, and the hundred men that were with him, came unto the outermost part of the camp in the beginning of the middle watch, when they had but newly set the watch: and they blew the trumpets, and brake in pieces the pitchers that were in their hands.

And Gaal spake again and said, See, there come people down by the middle of the land, and one company cometh by the way of the oak of Meonenim.

And Samson took hold of the two middle pillars upon which the house rested, and leaned upon them, the one with his right hand, and the other with his left.