This message is about the glories of the latter house and how they compare to the glories of the local church today.
This short epistle deals with one specific problem: the reception and aid of the brethren who will be passing through as they perform their deeds of ministry. In short, this epistle is about the importance of hospitality.
The distance between man and God is great. This is partly based on the greatness of God, but the distance is magnified even more by the lowliness of man.
The children of Israel were to keep themselves separated from the other nations but, by intermarrying with the different nations around them, they had compromised and taken on their abominations. The answer for them, though it might seem harsh, was to separate from their heathen marriages.