But to suppose that saints under the gospel can ever be placed in circumstances like those of the ancient church is to suppose that they may be put under the same typical economy which has vanished away, given place to the substance, and ceased to be binding even on the natural Israelites. To be in like circumstances they must also be made the executors of God's wrath, to inflict vengeance, by his particular command, on idolatrous and rebellious nations. The Israelites had the same high authority to exterminate the Canaanites and subdue the idolatrous nations about Palestine that the holy angels had to destroy Sodom and Gomorrah. It is perfectly plain that if God should positively command Christians to take the weapons of war and not only repel invasion but actually exterminate nations, it would be their duty to obey, and a refusal would be open rebellion against God. The Old Testament saints received such commands, but Christians have no such authority, which makes a material difference in circumstances. Some general observations relative to the different dispensations of the church of God may illustrate this topic more fully. The Old Testament economy has sometimes, perhaps without reason, been divided into the Adamic, Patriarchal, and Mosaic dispensations of the church; but as the latter was more full and complete, and as the distinction between the Mosaic and Christian dispensations is common, I shall confine my remarks chiefly to that distinction, though I consider the great distinction to be between the Old and New Testament economies.