Acting the part of bishops, or overseers, as the word signifies; and so this exhortation either respects officers of the church of the Hebrews, whose business it was more especially to inspect into the principles and practices of the members of it, and take care that they did not imbibe false doctrines, or live immoral lives; or rather the several members of the church, whose business it is to watch over one another, since this epistle seems to be written to the whole church.