The Testimonies Of Irenaeus, Novatianus, Justin Martyr, Theophilus, Tertullian, Origen, (Who lived in the two first Centuries after Christ was born, or thereabouts;) As Also, Of Arnobius, Lactantius, Eusebius, Hilary, and Brightman; Concerning That One God, and the Persons of the Holy Trinity. Together with Observations on the same