Book of Common Prayer (page 200)

2. Of the Holy Spirit

Almighty and most merciful God, grant, we beseech thee,
that by the indwelling of thy Holy Spirit we may be enlightened
and strengthened for thy service; through Jesus Christ our
Lord, who liveth and reigneth with thee, in the unity of the
Holy Spirit, one God, now and for ever. Amen.

Preface of Pentecost

3. Of the Holy Angels

O Everlasting God, who hast ordained and constituted the
ministries of angels and men in a wonderful order: Mercifully
grant that, as thy holy angels always serve and worship thee in
heaven, so by thy appointment they may help and defend us
on earth; through Jesus Christ our Lord, who liveth and
reigneth with thee and the Holy Spirit, one God, for ever
and ever. Amen.

Preface of Trinity Sunday

4. Of the Incarnation

O God, who didst wonderfully create, and yet more
wonderfully restore, the dignity of human nature: Grant
that we may share the divine life of him who humbled
himself to share our humanity, thy Son Jesus Christ; who
liveth and reigneth with thee, in the unity of the Holy Spirit,
one God, for ever and ever. Amen.

Preface of the Epiphany