Each time I "compose myself" and acknowledge that I am in the presence of God it becomes just a bit more clear that the mercy of God is penetrating my being.  Even in my sinfulness, in my belief and unbelief, God's will for my love becomes more clear and lovely.  Like a mother's warm poultice it is "drawing" away my fear, guilt, idolatry, my disdain in the face of the merciless, like puss from a boil. 
I get the 2+2=5 metaphor of mercy.  Simply, like the mercy of God, it does not make any rational sense at all. It is somehow founded upon the civility, friendship, love of Aristotle's wisdom, the 2+2, taken beyond, not only to a new level in Jesus' redemption but also in the companionship with God in creation unfolding. We can contemplate but never understand. We have to just listen, learn, accept and enjoin, hopefully.