The doctrine of the Trinity states that in the unity of the Godhead there are three eternal and co-equal Persons: Father, Son and Holy Spirit, the same in essence but distinct in role—three Persons (or three centres of consciousness) and one Being (see diagram).
Fundisho la Utatu linasema kwamba katika umoja wa Uungu kuna Nafsi tatu za milele na zinazolingana: Baba, Mwana na Roho Mtakatifu, sawa katika kiini lakini tofauti katika jukumu-Nafsi tatu (au vituo vitatu vya fahamu) na moja. Kuwa (tazama mchoro).