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As iron cast into fire loses its rust and becomes glowing white, so he who turns completely to God is stripped of his sluggishness and changed into a new man.

Thomas (à Kempis), Thomas A. Kempis, Aloysius Croft, Harold Bolton (2003). “The Imitation of Christ”, p.32, Courier Corporation
As iron cast into fire loses its rust and becomes glowing white, so he who turns completely to God is stripped of his sluggishness and changed into a new man.