4-16. with you there shall be a man of every tribe, &c.—The social condition of the Israelites in the wilderness bore a close resemblance to that of the nomad tribes of the East in the present day. The head of the tribe was a hereditary dignity, vested in the oldest son or some other to whom the right of primogeniture was transferred, and under whom were other inferior heads, also hereditary, among the different branches of the tribe. The Israelites being divided into twelve tribes, there were twelve chiefs appointed to assist in taking the census of the people.

     20. Now the time was the time of the first grapes—This was in August, when the first clusters are gathered. The second are gathered in September, and the third in October. The spies' absence for a period of forty days determines the grapes they brought from Eshcol to have been of the second period.