How I understand the trinity:

Take GOD not as the name of the one true eternal and everlasting creator of all things but as the position he occupies.

The position is such that only three coexistent eternal beings could fill it.

G. O. D.

Three letters, three personages father, son and holy spirit, each making up a portion of and also the entirety of the one we call GOD.

Father: the creator

Son: the savior

Holy Spirit: the teacher, guide, and Miracle-Maker

All of whom make up our

G-racious
O-mni everything
D-eity

-MB