The Hebrew prophet Jonah didn't accept the full extent of God's grace. He believed that some people were worthy of God’s love and some people were not. 

Like Jonah, we don't understand the depth of the love and grace of God. We tend to judge others and ask for grace for ourselves and in the process, miss God's heart. God calls on those who have received mercy to show mery. 

The first step to extending grace is to experience grace.