trinity
trin-i-ty
noun
The Christian belief in God as three persons: Father, Son, and Holy Spirit.
"Many churches celebrate Trinity Sunday."
noun
A group or set of three people or things.
"The trinity of mind, body, and spirit."
Thesaurus
Synonyms: threesome, triplet, troika, tercet, three, deuce-ace, III, triad, tierce, trine, 3, ternary