Inward Peace and Goodwill

O Lord Jesus Christ,
by your incarnation you united
things earthly and heavenly.
Fill us with the sweetness
of inward peace and goodwill,
that we may join the heavenly host
in singing praises to your glory;
for you live and reign
with the Father and the Holy Spirit,
one God, now and forever.
Amen.

Source: Gregorian Rite, 6th Century

Source of this version: Freely modified from Collects and Prayers for Use in Church,  United Lutheran Church in America, 1935

Variant, as a blessing:

And may He, Who through His Incarnation united earthly things with Heavenly, fill us with the sweetness of inward peace and good will, and make us partakers with the Heavenly Host. Amen.

Source of this version: The Priest to the Altar: Or Aids to the Devout Celebration of Holy Communion Chiefly After the Ancient English Use of Sarum, Peter Goldsmith Medd,
Rivingtons, 1879, 11th Century