Skeptic asked: “When was trinity added to Paul made religion?”

The Trinity has been relevant since the Holy Spirit introduced same in Genesis 1:1 as a plural noun accompanied by a singular verb and the Holy Spirit then proceeds to introduce Himself as the Logistical Overseer of the creation narrative in Genesis 1:2.

If one is truly “born again” confirmed by the presence of the Holy Spirit within them as the Seal and Guarantor of New Covenant promise (Ephesians 1:13-14), the Trinity, the deity of Jesus, are rock solid doctrines that are undeniable.