Lord, take away my heart of stone, a heart so bitter and uncircumcised, and give me a new heart, a heart of flesh, a pure heart. You cleanse the heart and love the clean heart. Take possession of my heart and dwell in it, contain it, and fill it, You who are higher than the heights of my spirit and closer to me than my innermost self! You are the pattern of all beauty and the seal of all holiness. Set the seal of Your likeness upon my heart! In Your mercy set Your seal upon my heart, God of my heart and the God who is my portion for ever! Amen.
From a treatise by Baldwin, Bishop of Canterbury
Office of Readings, Thursday, 18th Week in Ordinary Time