As soon as we had heard it, our hearts did melt, neither did there remain any more spirit in any man, because of you: for Yahweh your God, he is God in heaven above, and on earth beneath.
      III. They solemnly engaged for her preservation in the common destruction (Joshua 2:14; Joshua 2:14): "Our life for yours. We will take as much care of your lives as of our own, and would as soon hurt ourselves as any of you." Nay, they imprecate God's judgments on themselves if they should violate their promise to her. She had pawned her life for theirs, and now they in requital pawn their lives for hers, and (as public persons) with them they pawn the public faith and the credit of their nation, for they plainly interest all Israel in the engagement in those words, When the Lord has given us the land, meaning not themselves only, but the people whose agents they were. No doubt they knew themselves sufficiently authorized to treat with Rahab concerning this matter, and were confident that Joshua would ratify what they did, else they had not dealt honestly; the general law that they should make no covenant with the Canaanites (Deuteronomy 7:2) did not forbid them to take under their protection a particular person, that had heartily come into their interests and had done them real kindnesses. The law of gratitude is one of the laws of nature. Now observe here, 1. The promises they made her. In general, "We will deal kindly and truly with thee,Joshua 2:14; Joshua 2:14. We will not only be kind in promising now, but true in performing what we promise; and not only true in performing just what we promise, but kind in out-doing thy demands and expectations." The goodness of God is often expressed by his kindness and truth (Psalms 117:2), and in both these we must be followers of him. In particular, "If a hand be upon any in the house with thee, his blood shall be on our head," Joshua 2:19; Joshua 2:19. If hurt come through our carelessness to those whom we are obliged to protect, we thereby contract guilt, and blood will be found a heavy load. 2. The provisos and limitations of their promises. Though they were in haste, and it may be in some confusion, yet we find them very cautious in settling this agreement and the terms of it, not to bind themselves to more than was fit for them to perform. Note, Covenants must be made with care, and we must swear in judgment, lest we find ourselves perplexed and entangled when it is too late after vows to make enquiry. Those that will be conscientious in keeping their promises will be cautious in making them, and perhaps may insert conditions which others may think frivolous. Their promise is here accompanied with three provisos, and they were necessary ones. They will protect Rahab, and all her relations always, provided, (1.) That she tie the scarlet cord with which she was now about to let them down in the window of her house, Joshua 2:18; Joshua 2:18. This was to be a mark upon the house, which the spies would take care to give notice of to the camp of Israel, that no soldier, how hot and eager soever he was in military executions, might offer any violence to the house that was thus distinguished. This was like the blood sprinkled upon the door-post, which secured the first-born from the destroying angel, and, being of the same colour, some allude to this also to represent the safety of believers under the protection of the blood of Christ sprinkled on the conscience. The same cord that she made use of for the preservation of these Israelites was to be made use of for her preservation. What we serve and honour God with we may expect he will bless and make comfortable to us. (2.) That she should have all those whose safety she had desired in the house with her and keep them there, and that, at the time of taking the town, none of them should dare to stir out of doors, Joshua 2:18; Joshua 2:19. This was a necessary proviso, for Rahab's kindred could not be distinguished any other way than by being in her distinguished house; should they mingle with their neighbours, there was no remedy, but the sword would devour one as well as another. It was a reasonable proviso that, since they were saved purely for Rahab's sake, her house should have the honour of being their castle, and that, if they would not perish with those that believed not, they should thus far believe the certainty and severity of the ruin coming upon their city as to retire into a place made safe by promise, as Noah into the ark and Lot into Zoar, and should save themselves from this untoward generation, by separating from them. It was likewise a significant proviso, intimating to us that those who are added to the church that they may be saved must keep close to the society of the faithful, and, having escaped the corruption that is in the world through lust, must take heed of being again entangled therein. (3.) That she should keep counsel (Joshua 2:14; Joshua 2:20): If thou utter this our business, that is, "If thou betray us when we are gone, or if thou make this agreement public, so as that others tie scarlet lines in their windows and so confound us, then we will be clear of thy oath." Those are unworthy of the secret of the Lord that know now how to keep it to themselves when there is occasion.