purity of heart on Sanctification

All: Have mercy on me, O God, according to your steadfast love; according to your abundant mercy blot out my transgressions. Wash me thoroughly from my iniquity, and cleanse me from my sin! Let me hea...

O God, our Father, in the life and death and resurrection of Jesus you have given us the remedy for sin. In him you have opened to us the way to forgiveness for all our past sins, and you have given u...