Prayer for a Renewed Heart

O Lord,
you have mercy on all.
Take away my sins,
and mercifully kindle in me
the fire of your Holy Spirit.
Take away my heart of stone
and give me a heart of flesh,
a heart to love and adore you,
a heart to delight in you,
to follow and to enjoy you,
for Christ’s sake. Amen.

Source: Ambrose, d. 397

Source of this version: Modified from https://anglicanprayer.wordpress.com/2010/03/04/lent-prayers-st-ambrose-give-me-a-heart-of-flesh/

Also quoted in The One Year Book of Personal Prayer, © 1991 Tyndale House Publishers (May 17)

The heart of stone and heart of flesh is a reference to Ezekiel 11:19 and Ezekiel 36:26.