In Christianity, divine grace refers to the sovereign favour of God for humankind — especially in regard to salvation — irrespective of actions ("deeds"), earned worth, or proven goodness.
More broadly, divine grace refers to God's gifts to humankind, including life, creation, and salvation. More narrowly but more commonly, grace describes the means by which humans are saved from original sin and granted salvation. This latter concept of grace is of central importance in the theology of Christianity, as well as one of the most contentious issues in Christian sectarianism.
Grace is often distinguished from mercy in that mercy is seen as not receiving punishment that one deserves to receive, whereas grace is receiving a positive benefit that one does not deserve to receive.
Source - www.en.wikipedia.org
