Advent 4

Stir up your power, O Lord, and come.
Help us by your great might,
that whatever is hindered by our sins
may be speedily accomplished for your glory;
for you live and reign with the Father and the Holy Spirit,
one God, now and forever.

Source: Historic Collect for the Fourth Sunday in Advent, Gelasian, 8th Century

Source of this version: Newly translated for A Collection of Prayers

Original in Latin:

Excita, quæsumus, Domine, potentiam tuam, et veni: et magna nobis virtute succurre: ut per auxilium gratiæ tuæ quod nostra peccata præpediunt, indulgentia tuæ propitiationis acceleret. Qui vivis…

See this article by Bosco Peters.