Tertullian (c. 160-220 AD) is officially given credit for coining the term “Trinity” to refer to the triune nature of the Godhead (Father, Son, and Holy Spirit).

The Biblical text, specifically the NT, references the Father, Son, and Spirit in about 120 different passages (e.g. Matt 28:18-20; Jn 14-17; Acts 2:32-33, etc.), though not all references use the three together.

While “Trinity” is not actually used in the Scripture, all orthodox Christian traditions have accepted the term as a sufficient way of describing the three-in-one relationship of God, including my own denomination, the MCUSA.

Those that don’t embrace Trinitarian theology are Unitarians, Jehovah’s Witnesses, Oneness Pentecostals, Mormons, Christian Scientists, etc. According to orthodoxy, these so-called “Christian” groups are heretical (or cultic) for being anti-Trinitarian, and for other reasons related to Christology.

The Trinity Revealed by Jesus & the Apostles

I’ve heard skeptics and YouTube atheists claim that Constantine is responsible for belief in the Trinity, and for it becoming…