1. They resolved to spare the lives of the Gibeonites, for so they had expressly sworn to do (v. 15), to let them live. (1.) The oath was lawful, else it had not bound them any more than Herod's oath bound him to cut off John Baptist's head; it is true God had appointed them to destroy all the Canaanites, but the law must be construed, in favorem vitæ—with some tender allowance, to mean those only that stood it out and would not surrender their country to them, and not to bind them so far to put off the sense of honour and humanity as to slay those who had never lifted up a hand against them nor ever would, but before they were reduced to any extremity, or ever attempted any act of hostility, with one consent humbled themselves; the kings of Israel were certainly more merciful kings than to do so (1 Kings xx. 31), and the God of Israel a more merciful God than to order it so. Satis est prostrasse leoni—It is enough to have laid the lion prostrate. And besides, the reason of the law is the law; the mischief designed to be prevented by that law was the infecting of the Israelites with their idolatry, Deut. vii. 4. But if the Gibeonites renounce their idolatry, and become friends and servants to the house of God, the danger is effectually prevented, the reason of the law ceases, and consequently the obligation of it, especially to a thing of this nature. The conversion of sinners shall prevent their ruin. (2.) The oath being lawful, both the princes and the people for whom they transacted were bound by it, bound in conscience, bound in honour to the God of Israel, by whom they had sworn, and whose name would have been blasphemed by the Canaanites if they had violated this oath. They speak as those that feared an oath (Eccl. ix. 2), when they argued thus: We will let them live, lest wrath be upon us, because of the oath which we swore, v. 20. He that ratifies a promise with an oath imprecates the divine vengeance if he wilfully break his promise, and has reason to expect that divine justice will take him at his word. God is not mocked, and therefore oaths are not to be jested with. The princes would keep their word, [1.] Though they lost by it. A citizen of Zion swears to his own hurt and changes not, Ps. xv. 4. Joshua and the princes, when they found it was to their prejudice that they had thus bound themselves, did not apply to Eleazar for a dispensation, much less did they pretend that no faith is to be kept with heretics, with Canaanites; no, they were strangers to the modern artifices of the Romish church to elude the most sacred bonds, and even to sanctify perjuries [2.] Though the people were uneasy at it, and their discontent might have ended in a mutiny, yet the princes would not violate their engagement to the Gibeonites; we must never be over-awed, either by majesty or multitude, to do a sinful thing, and go against our consciences. [3.] Though they were drawn into this league by a wile, and might have had a very plausible pretence to declare it null and void, yet they adhered to it. They might have pleaded that though those were the men with whom they exchanged the ratifications, yet these were not the cities intended in the league; they had promised to spare certain cities, without names, that were very far off, and upon the express consideration of their being so; but these were very near, and therefore not the cities that they covenanted with. And many learned men have thought that they were so grossly imposed upon by the Gibeonites that it would have been lawful for them to have recalled their promise, but to preserve their reputation, and to keep up in Israel a veneration of an oath, they would stand to it; but it is plain that they thought themselves indispensably obliged by it, and were apprehensive that the wrath of God would fall upon them if they broke it. And, however their adherence to it might be displeasing to the congregation, it is plain that it was acceptable to God; for when, in pursuance of this league, they undertook the protection of the Gibeonites, God gave them the most glorious victory that ever they had in all their wars (ch. x.), and long afterwards severely avenged the wrong Saul did to the Gibeonites in violation of this league, 2 Sam. xxi. 1. Let this convince us all how religiously we ought to perform our promises, and make good our bargains; and what conscience we ought to make of our words when they are once given. If a covenant obtained by so many lies and deceits might not be broken, shall we think to evade the obligation of those that have been made with all possible honesty and fairness? If the fraud of others will not justify or excuse our falsehood, certainly the honesty of others in dealing with us will aggravate and condemn our dishonesty in dealing with them.