Matthew 23:8

Clement of Alexandria Stromata Book VI

trains and perfects; whence it is rightly said, "Call no man your teacher on earth."[107]

Tertullian On the Veiling of Virgins

So, too, righteousness-for the God of righteousness and of creation is the same-was first in a rudimentary state, having a natural fear of God: from that stage it advanced, through the Law and the Prophets, to infancy; from that stage it passed, through the Gospel, to the fervour of youth: now, through the Paraclete, it is settling into maturity. He will be, after Christ, the only one to be called and revered as Master;[8]

Tertullian On Monogamy

Therefore a wife, when her husband is dead, will not marry; for if she marry, she will of course be marrying (his) brother: for "all we are brethren."[51]

Five Books in Reply to Marcion

As teachers (Christ alone doth all things teach[197]

A Treatise of Novatian Concerning the Trinity

How, then, is it true according to the Scriptures, there is one Lord? And Christ is called the "one Master."[281]

Origen Commentary on John Book I

But to this we answer that it happens not unfrequently in Scripture when two or more persons or things are named by the same name, the name attaches itself most significantly to one of those things or persons. Thus the Saviour says,[21]