For Purity

O Holy Spirit of God,
very God,
you descended on Christ at the river Jordan,
on the apostles in the upper room;
we have sinned against heaven and before you;
purify us again with your divine fire,
and have mercy on us;
for Christ’s sake.
Amen.

Source: Nerses of Clajes (St. Nerses I)

Source of this version:  Prayers of the Early Church,  ed.  J. Manning Potts,  The Upper Room, Nashville, Tennessee, © 1953 (Public domain in the U.S.)