God’s mercy is a problem for us because God is merciful even to those whose behavior is so egregious that only a fool or a liar or a callous person would fail to be outraged by what they do. There is no sense in which God’s grace encourages us or allows us to be indifferent to outrageous behavior. God knows how to be perfectly just and perfectly merciful. We do not know how to be either. So, we crucify the God of mercy and the God of mercy sacrifices the One and Only Son to have mercy on us.