The Gershonites were placed in cities in eastern Manasseh, Issachar, Asher, and Naphtali; while the Merarites were in Zebulun, and in the transjordanic tribes of Gad and Reuben. They thus garrisoned the northern and eastern districts. Those placed in the north ought to have been barriers against the gross idolatry of Tyre and Sidon, and those in the east, besides resisting the idolatry of the desert tribes, should have held back that of Damascus and Syria. But there is very little to show that the Levites as a whole rose to the dignity of their mission in these regions, or that they formed a very efficient barrier against the idolatry and corruption which they were designed to meet. No doubt they did much to train the people to the outward observance of the law. They would call them to the celebration of the great annual festivals, and of the new moons and other observances that had to be locally celebrated. They would look after cases of ceremonial defilement, and no doubt they would be careful to enjoin payment of the tithes to which they had a claim. They would do their best to maintain the external distinctions in religion, by which the nation was separated from its neighbours. But, except in rare cases, they do not appear to have been spiritually earnest, nor to have done much of that service which Samuel did in the southern part of the country. Externalism and formalism seem to have been their most frequent characteristics; and externalism and formalism are poor weapons when the enemy cometh in like a food.