Novatian: Treatise Concerning the Trinity XX-XXVIII
These chapters continue the defense of the nature and person of Christ from Scripture, arguing against specific heretical claims and interpretations (mostly the Sabellians) and giving his own read. These chapters are fairly interesting, but again can be skimmed in good conscience. Novatian again defends the full Deity and the full humanity of Christ, balancing well these aspects of His person without wandering into any of the heresies that would later develop:
For we know that the Word of God was invested with the substance of flesh, and that He again was divested of the same bodily material, which again He took up in the resurrection and resumed as a garment. And yet Christ could neither have been divested of nor invested with manhood, had He been only man: for man is never either deprived of nor invested with himself.Novatian really is an excellent apologist, whatever his ecclesiastical proclivities.