6. Sixthly, these promises cannot be contemplated without seeing that the ordinary and regular government of the Church springs from the person whom they designate, and in whom they are concentrated. To take the last, all spiritual care is summed up in the word Pastorship, the office of priest, bishop, metropolitan, patriarch, and pope, rising in degree, and extending in range, but in its nature the same. On the contrary Apostles, (with this one exception, in virtue of the Primacy,) Prophets, and Evangelists, are extraordinary officers, attending the opening of the dispensation, but afterwards dropping off. But the Church, as it was to endure for ever, and the orderly arrangement of the divine ministry, were summed up in the Primacy, and flowed forth from it as the full receptacle of the virtue of God the Word Incarnate. And so it is the head of the ministerial body. All which is set forth as in a picture to the mind, in that scene upon the shore of the lake of Galilee, when the Lord said to Peter, "Feed My sheep." 7. And, again, Peter was thus made the beginning and principle of spiritual power, as it left the Person of God the Word, not for once, but for ever. Long as the structure should endure, its principle of cohesion must bind it. As the law of gravitation binds all worlds together in the natural kingdom, and is a _continuous_ source of strength and harmony, so should be in the spiritual kingdom that force which the same Wisdom of God established; it goes on with power undiminished; it is the full fountain-head from which all streams emanate; it is the highest image of God's power as the centre and source of all things. This idea is dwelt upon by S. Cyprian and S. Augustine, as well as by Pope S. Innocent,[31] the contemporary of the latter, and was afresh expressed in a synodical letter of the three provinces of Africa to Pope Theodore, in A.D. 646, "No one can doubt that there is in the Apostolic See a great unfailing fountain, pouring forth waters for all Christians, whence rich streams proceed, bountifully irrigating the whole Christian world."[32]