'Spy' in the Bible

and Rahab the harlot, and the house of her father, and all whom she hath, hath Joshua kept alive; and she dwelleth in the midst of Israel unto this day, for she hid the messengers whom Joshua sent to spy out Jericho.

And Joshua sendeth men from Jericho to Ai, which is near Beth-Aven, on the east of Bethel, and speaketh unto them, saying, 'Go up and spy the land;' and the men go up and spy Ai,

a son of forty years am I in Moses, servant of Jehovah, sending me from Kadesh-Barnea, to spy the land, and I bring him back word as with my heart;