The Son of God died; it is by all means to be believed because it is absurd. And he was buried and rose again; the fact is certain, because it is impossible.
TertullianThe Lord challenges us to suffer persecutions and to confess Him. He wants thiose who belong to him to be brave and fearless. He himself shows how weakness of the flesh is overcome by courage of the Spirit....A christian is fearless.
TertullianBut all the other frenzies of passions-impious both toward the bodies and toward the sexes-beyond the laws of nature, we banish not only from the threshold, but from all shelter of the Church, because they are not sins, but monstrosities.
TertullianKeep always in mind the rule of faith which I profess and by which I bear witness that the Father and the Son and the Spirit are inseparable from each other, and then you will understand what is meant by it. Observe now that I say the Father is other [distinct], the Son is other, and the Spirit is other. This statement is wrongly understood by every uneducated or perversely disposed individual, as if it meant diversity and implied by that diversity a separation of Father, Son, and Holy Spirit
Tertullian