Nehemiah 4:11-13

And our adversaries said, They shall not know, neither see, till we come in the midst among them, and slay them, and cause the work to cease. And it came to pass, that when the Jews which dwelt by them came, they said unto us ten times, From all places whence ye shall return unto us they will be upon you. Therefore set I in the lower places behind the wall, and on the higher places, I even set the people after their families with their swords, their spears, and their bows.