Grace makes possible love (agape love or service love). Mercy flows from love. Love makes possible mercy, or the willingness to give people even more than what they deserve in a justice-sense. Love and mercy make compassion possible, which is the decision and feeling of suffering along with those who suffer. Grace, love, mercy, and compassion make possible forgiveness which is to love and have mercy and compassion on those who are not having love and mercy and compassion on you.