I thought I’d clarify why I affirm trinitarian doctrine even though I am no fan of Emperor Constantine, a man historically associated with the Nicene Creed (325AD). It’s because, although the Nicene Creed wasn’t formulated till then, the trinitarian thinking it articulated hardly appeared out of nowhere. Christian leaders had been expressing themselves in these terms long prior to that. A prime example is Tertullian (160-215AD), an African apologist and theologian, who put it this way:
“We define that there are two, the Father and the Son, and three with the Holy Spirit, and this number is made by the pattern of salvation . . . [which] brings about unity in trinity, interrelating the three, the Father, the Son, and the Holy Spirit. They are three, not in dignity, but in degree, not in substance but in form, not in power but in kind. They are of one substance and power, because there is one God from whom these degrees, forms and kinds devolve in the name of Father, Son and Holy Spirit.”