[[Biblical Theology]] / Trinity The doctrine that God exists as one substance in three persons: Father, Son, and Holy Spirit. ## Appearances - *How to Use the Book of Common Prayer: A Guide to the Anglican Liturgy*, 4 Further Up and Further In, p. 53 - *How to Use the Book of Common Prayer: A Guide to the Anglican Liturgy*, 4 Further Up and Further In, p. 53 - *How to Use the Book of Common Prayer: A Guide to the Anglican Liturgy*, 8 The Prayer Book and the Christian Year, p. 130 - *How to Use the Book of Common Prayer: A Guide to the Anglican Liturgy*, 8 The Prayer Book and the Christian Year, p. 131 - *How to Use the Book of Common Prayer: A Guide to the Anglican Liturgy*, 8 The Prayer Book and the Christian Year, p. 131 - *How to Use the Book of Common Prayer: A Guide to the Anglican Liturgy*, 8 The Prayer Book and the Christian Year, p. 131 - *How to Use the Book of Common Prayer: A Guide to the Anglican Liturgy*, 8 The Prayer Book and the Christian Year, p. 132