Book of Common Prayer (page 141)

Additional Directions

Morning and Evening Prayer

Any of the opening sentences of Scripture, including those listed for
specific seasons or days, may be used at any time according to the
discretion of the officiant.

The proper antiphons on pages 43-44 and 80-82 may be used as refrains
with either of the invitatory Psalms.

Antiphons drawn from the Psalms themselves, or from the opening
sentences given in the Offices, or from other passages of Scripture may
be used with the Psalms and biblical Canticles.

Gloria Patri is always sung or said at the conclusion of the entire
portion of the Psalter; and may be used after the Invitatory Psalm or
the Canticle "Christ our Passover," after each Psalm, and after each
section of Psalm 119.

The Gloria printed at the conclusion of certain Canticles may be
omitted when desired.

The following pointing of the Gloria may be used:

Glory to the Father, and to the Son, *
and to the Holy Spirit:

As it was in the beginning, is now, *
and will be for ever. Amen.

In Rite One services of Morning Prayer and Evening Prayer, the
following form of the Gloria may be used:

Glory be to the Father, and to the Son, *
and to the Holy Ghost:

As it was in the beginning, is now, and ever shall be, *
world without end. Amen.

Metrical versions of the Invitatory Psalms, and of the Canticles after
the Readings, may be used.