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I. THE DIVINE DISPLEASURE AT HUMAN SIN. This was not a new lesson to the Israelites. At Sinai, at Kadesh, at Peor, it had been taught them; but, under new temptations, they needed renewed instruction. Sin unrepented and unforsaken provokes God's changeless displeasure. Such displeasure is a part of eternal justice. We magnify the grace of God, but grace is only a fragment of His character; it co-exists with justice.

II. THE MANY MAY BE PUNISHED FOR THE SINS OF ONE. God does not deal with men as individuals only. There is a corporate unity of the family, the Church, the State, which He regards; and, as the good deeds of one benefit all, the sins of one bring evil upon all. In this matter, God's thought is often not as ours. No modern leader, after the sack of a city, would be surprised to find an Achan in every tent. Might not, then, the one have been pardoned for the sake of the self-restraint of the many? At least, might not the guilty one have suffered all the consequences of his crime, without involving his innocent fellows? Such questions we are not competent to decide. Only a far-seeing Wisdom, which can fully fathom motives and forecast all the results of individual sins, can tell when to be gracious and forgiving, and when to punish. The war against the idolatrous races of Palestine was not to degenerate into pillage, a school for covetousness and selfishness for the victors; and so, at the beginning, such a lesson was needed as would make each afraid of private transgression, and also watchful of others.

III. THE DEFEAT AT AI ILLUSTRATES THE DIFFERENCE BETWEEN HUMAN SAGACITY AND DIVINE GUIDANCE. The Israelites were so strangely unteachable that they did not clearly distinguish between the two. The victory at Jericho was clearly not theirs, but God's. But, in the flush of victory, this was forgotten. Israel rejoiced in her own success. Prosperity brought presumption, out of which grew the ill-advised expedition against Ai. It is easy for the Church to repose confidence in the stability and strength of her own organisation, and in smoothly-running ecclesiastical machinery, to find the sure augury of her success. Then some spiritual Ai must needs recall us to the truth that the victories of the kingdom of heaven are "not by might nor by power," but by the Spirit of the Lord of hosts.

IV. THERE IS GREAT DANGER IN UNDERESTIMATING THE POWER OF AN ADVERSARY. The easy success at Jericho made Israel over-confident. A Southern historian of the rebellion has recorded his opinion that the first battle at Bull Run was a serious misfortune to the Southern cause. It led to mistaken confidence. Great numbers of volunteers left the Southern army and returned home, believing the war ended. Thoughtful writers at the North agree that it helped the Northern cause, for it taught us not to despise the enemy, and set clearly before us the magnitude of the conflict. And this has its parallel in the conflicts of the spiritual life. After Jericho, Ai. There is no commoner mistake than the belief that following some great victory will be peaceful conquest, the rest of Canaan. There is no earthly Canaan.

V. IT IS FOLLY TO TRUST IN PAST EXPERIENCES. The three thousand men who went up against Ai were full of confidence which grew out of the successes at the Jordan and at Jericho. They assumed the presence and guidance of God because of His past deliverances. They knew what had happened; from this they formed a doctrine of probabilities of what would happen. They learned the truth of the maxim, "It is a part of probability that many improbable things will happen." We cannot measure our present relation to God by the past. The past may give us ground for hope, but there is no science of spiritual probabilities. "There are factors in" the spiritual life which can change,, the face of things to any extent, and which hide from all calculations of the probable. Christian progress is by "forgetting the things that are behind." Have we a living faith to-day?

(Sermons by the Monday Club.)

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KJV: And Joshua sent men from Jericho to Ai, which is beside Bethaven, on the east side of Bethel, and spake unto them, saying, Go up and view the country. And the men went up and viewed Ai.

WEB: Joshua sent men from Jericho to Ai, which is beside Beth Aven, on the east side of Bethel, and spoke to them, saying, "Go up and spy out the land." The men went up and spied out Ai.