I pass over all the several particulars of the agreement between Rahab and the spies, to call the Reader's attention to the interesting circumstances to which Rahab was enjoined by the spies, as signals between her and Israel. In the scarlet thread which the men of Israel gave Rahab, is there not somewhat of a sacramental design, similar to what God had enjoined Israel at the passover, when the blood was to be sprinkled upon the door post? And as, the apostle had it in commission from the Holy Ghost to tell the church in after ages, that all this referred to the blood of sprinkling of Jesus, who was and is our passover: did not both refer to one and the same thing, that the security of all redeemed souls is only in Jesus? And again, that none of her family at the time of Jericho being destroyed, should go without the doors of the house on pain of death; was not this a still further evidence of the same thing, very plainly proving; that one and the same object was intended to be conveyed under both sacramental signs? See Exodus 12:12-13. Compared 1 Corinthians 5:7.
Joshua 2:14-21
14 And the men answered her, Our life for yours, if ye utter not this our business. And it shall be, when the LORD hath given us the land, that we will deal kindly and truly with thee.
15 Then she let them down by a cord through the window: for her house was upon the town wall, and she dwelt upon the wall.
16 And she said unto them, Get you to the mountain, lest the pursuers meet you; and hide yourselves there three days, until the pursuers be returned: and afterward may ye go your way.
17 And the men said unto her, We will be blameless of this thine oath which thou hast made us swear.
18 Behold, when we come into the land, thou shalt bind this line of scarlet thread in the window which thou didst let us down by: and thou shalt bringc thy father, and thy mother, and thy brethren, and all thy father's household, home unto thee.
19 And it shall be, that whosoever shall go out of the doors of thy house into the street, his blood shall be upon his head, and we will be guiltless: and whosoever shall be with thee in the house, his blood shall be on our head, if any hand be upon him.
20 And if thou utter this our business, then we will be quit of thine oath which thou hast made us to swear.
21 And she said, According unto your words, so be it. And she sent them away, and they departed: and she bound the scarlet line in the window.