Against Praxeas - Adversus Praxean - Complete and Unabridged - A Treatise on the Trinity written around 212-217 AD #929699

Tertullian’s Against Praxeas stands as one of the earliest and most influential third-century treatises on the Trinity.
In this work, Tertullian defends the distinct personhood of the Father, Son, and Holy Spirit against the modalism of Praxeas, offering some of the earliest formulations of Trinitarian terminology.
A foundational text for understanding the development of Christian doctrine.