- God the Father and His Son and His Holy Spirit: one in essence and undivided. God revealed the mystery of the Trinity at Christ's baptism (Matt. 3:13 17)
, but even before that event, numerous Old Testament references pointed to the Trinity. For example, the frequent use of plural pronouns referring to the one God (Gen. 1:26)
; the three angels who appeared to Abraham (Gen. 18:1-16)
; and the Triple Holy hymn sung by the angels in Isaiah's vision (Is. 6:1 4)
all suggest one God in three Persons, the Father, Son, and Holy Spirit (Matt. 28:19).