Here we see that the servant of the Lord is angry at Him for having love and compassion for the city of Nineveh. God asked Jonah if it is right of him to be so angry, God is trying to learn Jonah His real nature were love and compassion stands central. Don't be as Jonah, angry but be thankful for what He does.
The God that has not changed and will not change wants to do something in this generation, a generation with the characteristics of Ruth!...
Who knows what change God can bring for you when you call upon Him. Just like the King of Nineveh did and God answered.