"I will sprinkle clean water upon you, and you shall be clean from all your uncleannesses, and from all your idols I will cleanse you. A new heart I will give you, and a new spirit I will put within you, and I will remove from your body the heart of stone and give you a heart of flesh." 

Ezekiel 36:25-28 (a new heart and a new spirit as a baptism of sorts)