heavenly Spirit over all the earth, to protect it with His wings. Such, then, was the course followed by the Son of God, and such, also, were the forms of the living creatures; and such as was the form of the living creatures, such, also, was the character of the Gospel. For the living creatures are quadriform, and the Gospel is quadriform, as is also the course followed by our Lord. For this reason four principal covenants were given mankind: one prior to the Deluge, under Adam; the second after the Deluge, under Noah; the third was the giving of the law under Moses; the fourth is that which renovates man and sums up all things in itself by means of the Gospel, raising and bearing men upon its wings into the heavenly kingdom. (_c_) Tertullian, _Adv. Marcion._, IV, 5. (MSL, 2:395.) Tertullian’s work against Marcion belongs to the first decade of the third century; see above, § 23, _b_. In the following passage he combines the argument from the apostolic churches with the authority of the apostolic witness. This is the special importance of the reference to the connection of St. Mark’s Gospel with St. Peter, and is an application of the principle that the authority of a book in the Church rested upon its apostolic origin. If it is evidently true that what is earlier is more true, that what is earlier is what is from the beginning, that what is from the beginning is from the Apostles, it will be equally evidently true that what is handed down from the Apostles is what has been a sacred deposit in the churches of the Apostles. Let us see what milk the Corinthians drank from Paul; to what rule the Galatians were brought for correction; what the Philippians, the Thessalonians, the Ephesians, read; what the Romans near by also say, to whom Peter and Paul bequeathed the Gospel even sealed with their own blood. We have also John’s nursling churches. For, although Marcion rejects his Apocalypse, the order of bishops, when traced to their origin, will rest on John as their author. Likewise the noble lineage of the other churches is recognized. I say, therefore, that in them, and not only in the apostolic churches, but in all those which are united with them in the fellowship of the mystery [_sacramenti_], that Gospel of Luke, which we are defending with all our might [_cf._ § 23], has stood its ground from its very first publication; whereas Marcion’s gospel is not known to most people, and to none whatever is it known without being condemned. Of course it has its churches, but they are its own; they are as late as they are spurious. Should you want to know their origins, you will more easily discover apostasy in it than apostolicity, with Marcion, forsooth, as their founder or some one of Marcion’s swarm. Even wasps make combs; so, also, these Marcionites make churches. The same authority of the apostolic churches will afford evidence to other gospels, also, which we possess