The Rule of Faith is altogether one, sole, immovable, and irreformable—namely, of believing in one God the Almighty, the Maker of the world; and His Son, Jesus Christ, born of the Virgin Mary, crucified under Pontius Pilate, on the third day raised again from the dead, received in the heavens, sitting now at the right hand of the Father, coming to judge the quick and the dead, also through the resurrection of the flesh.[53]
(d) Tertullian, Adv. Praxean, 2. (MSL, 2:156.)
The work of Tertullian against Praxeas is one of his latest works, and is especially important as developing the doctrine of the Trinity as opposed to the Patripassianism of Praxeas. To this theory of Praxeas, Tertullian refers in the opening sentence of the following extract, quoting the position of Praxeas. See below, [§ 40, b].
“Therefore after a time the Father was born, and the Father suffered, He himself God, the omnipotent Lord, Jesus Christ was preached.” But as for us always, and now more, as better instructed by the Paraclete, the Leader into all truth: We believe one God; but under this dispensation which we call the economy there is the Son of the only God, his Word [Sermo] who proceeded from Him, through whom all things were made, and without whom nothing was made. This One was sent by the Father into the Virgin, and was born of her, Man and God, the Son of Man and the Son of God, and called Jesus Christ; He suffered, He died and was buried, according to the Scriptures; and raised again by the [pg 126] Father, and taken up into the heavens, and He sits at the right hand of the Father; He shall come again to judge the quick and the dead: and He thence did send, according to His promise, from the Father, the Holy Ghost, the Paraclete, the Sanctifier of the faith of those who believe in the Father and the Son and the Holy Ghost. That this rule has come down from the beginning, even before any of the earlier heresies, much more before Praxeas, who is of yesterday, the lateness of date of all heresies proves, as also the novelties of Praxeas, a pretender of yesterday.
(e) Tertullian, De Præscriptione, 13. (MSL, 2:30.)
The Rule of Faith is … namely, that by which it is believed: That there is only one God, and no other besides the Maker of the world, who produced the universe out of nothing, through His Word [Verbum], sent forth first of all; that this Word, called His Son, was seen in the name of God in various ways by the patriarchs, and always heard in the prophets, at last was sent down from the Spirit and power of God the Father, into the Virgin Mary, was made flesh in her womb, and born of her, lived as Jesus Christ; that thereupon He preached the new law and the new promise of the kingdom of the heavens; wrought miracles; was fastened to the cross; rose again the third day; was caught up into the heavens; and sat down at the right hand of the Father; He sent in His place the power of the Holy Ghost, to lead the believers; He will come again with glory to take the saints into the enjoyment of eternal life and the celestial promises, and to judge the wicked with perpetual fire, with the restoration of the flesh.