No. You are Teaching Men about God and His VERY Character. A teacher that is valid must be able to build their doctrine from scripture, by themselves, especially on a matter as important as the Trinity and the Nature of God.
No easy outs. If you desire to Reproof people on the nature of God, it is a biblically fair request that you can build your own doctrine about the TriUne nature of God and His Character, from scripture...... Alone. TRUE Sola No Reference to Commentary is allowed. Biblical Canon only, as the Reformation had indicted the HRCC of using Commentary.
The easiest way to start is to proof the Three aspect via the Old Testament. This is easily done with Christophanies, The Sodom and Gomorrah incident, Moses and God, Isaiah (For the Holy Spirit). Deuteronomy 6, at the Jewish Shema is perfect to reaffirm the Une.
This lays the foundation for the New Testament Revelations.