1:21-36 The people of Israel were very careless of their duty and interest. Owing to slothfulness and cowardice, they would not be at the pains to complete their conquests. It was also owing to their covetousness: they were willing to let the Canaanites live among them, that they might make advantage of them. They had not the dread and detestation of idolatry they ought to have had. The same unbelief that kept their fathers forty years out of Canaan, kept them now out of the full possession of it. Distrust of the power and promise of God deprived them of advantages, and brought them into troubles. Thus many a believer who begins well is hindered. His graces languish, his lusts revive, Satan plies him with suitable temptations, the world recovers its hold; he brings guilt into his conscience, anguish into his heart, discredit on his character, and reproach on the gospel. Though he may have sharp rebukes, and be so recovered that he does not perish, yet he will have deeply to lament his folly through his remaining days; and upon his dying bed to mourn over the opportunities of glorifying God and serving the church he has lost. We can have no fellowship with the enemies of God within us or around us, but to our hurt; therefore our only wisdom is to maintain unceasing war against them.

24. the spies … said, … Show us, … the entrance into the city—that is, the avenues to the city, and the weakest part of the walls.

we will show thee mercy—The Israelites might employ these means of getting possession of a place which was divinely appropriated to them: they might promise life and rewards to this man, though he and all the Canaanites were doomed to destruction (Jos 2:12-14); but we may assume the promise was suspended on his embracing the true religion, or quitting the country, as he did. If they had seen him to be firmly opposed to either of these alternatives, they would not have constrained him by promises any more than by threats to betray his countrymen. But if they found him disposed to be serviceable, and to aid the invaders in executing the will of God, they might promise to spare him.