'Camp' in the Bible

And it came to pass on the third day, that behold, a man came out of the camp from Saul with his garments rent, and earth upon his head; and as soon as he came to David, he fell to the earth and did obeisance.

And David said to him, Whence comest thou? And he said to him, Out of the camp of Israel am I escaped.

And the three mighty men broke through the camp of the Philistines, and drew water out of the well of Bethlehem, which is in the gate, and took it, and brought it to David; however he would not drink of it, but poured it out to Jehovah.