Reconnoissance
The umbrella collects three episodes in which Israelite leaders send a small party ahead to assess a target city before the main attack. In each case the pattern is the same: men dispatched, intelligence gathered, return with a report that shapes the campaign that follows. The objects are Jericho, Beth-el, and Laish.
Jericho
The most extended account is Joshua's sending into Jericho. The mission is covert and the entry-point is Rahab's house: "And Joshua the son of Nun sent out of Shittim two men as spies secretly, saying, Go, view the land, and Jericho. And they went and came into the house of a whore whose name was Rahab, and lay there" (Josh 2:1). What the spies bring back is not a fortifications survey but a morale reading delivered to them by Rahab herself: "I know that Yahweh has given you⁺ the land, and that the fear of you⁺ is fallen on us, and that all the inhabitants of the land melt away before you⁺. For we have heard how Yahweh dried up the water of the Red Sea before you⁺, when you⁺ came out of Egypt; and what you⁺ did to the two kings of the Amorites, who were beyond the Jordan, to Sihon and to Og, whom you⁺ completely destroyed. And as soon as we had heard it, our hearts melted, neither did there remain anymore spirit in any man, because of you⁺" (Josh 2:9-11).
The mission produces an oath protecting Rahab's household, marked by a token — "you will bind this line of scarlet thread in the window by which you have let us down" (Josh 2:18) — and the report back to Joshua condenses Rahab's testimony into the spies' own conclusion: "Truly Yahweh has delivered into our hands all the land; and moreover all the inhabitants of the land melt away before us" (Josh 2:24). The protection is honored at the city's fall: "And the young men the spies went in, and brought out Rahab, and her father, and her mother, and her brothers, and all who she had; all her kindred also they brought out; and they set them outside the camp of Israel" (Josh 6:23).
Beth-el
The Beth-el reconnoissance is recorded only in passing, as the prelude to the city's capture by the house of Joseph: "And the house of Joseph sent to spy out Beth-el. (Now the name of the city formerly was Luz.)" (Judg 1:23). The narrative immediately following turns on a man surprised leaving the city — "And the watchers saw a man come forth out of the city, and they said to him, Show us, we pray you, the entrance into the city, and we will deal kindly with you" (Judg 1:24) — but the bare reconnoissance notice is the whole of what is given for the strategic survey itself.
Laish
The Danite reconnoissance is the longest party and the most deliberative. Five men are sent from the tribal centers: "And the sons of Dan sent of their family five men from their whole number, men of valor, from Zorah, and from Eshtaol, to spy out the land, and to search it; and they said to them, Go, search the land. And they came to the hill-country of Ephraim, to the house of Micah, and lodged there" (Judg 18:2). They consult an oracle through Micah's Levite (Judg 18:5-6) and then proceed.
What they find at Laish is a defensible-but-unprepared population: "Then the five men departed, and came to Laish, and saw the people who were in it, how they dwelt in security, after the manner of the Sidonians, quiet and secure; for there was no one possessing authority that might put [them] to shame in anything in the land, and they were far from the Sidonians, and had no dealings with man" (Judg 18:7). The verdict they bring home is the call to attack: "Arise, and let us go up against them; for we have seen the land, and, look, it is very good: and are you⁺ still? Don't be slothful to go and to enter in to possess the land. When you⁺ go, you⁺ will come to a people secure, and the land is large; for God has given it into your⁺ hand, a place where there is no want of anything that is in the earth" (Judg 18:9-10).
Across the three episodes the pattern holds: a small advance party, an intelligence question that turns more on the inhabitants' morale and security than on walls and weapons, and a return report that authorizes the attack. The Jericho mission produces a covenant of mercy as a by-product; the Beth-el and Laish missions return with the bare verdict to proceed.