Equality comes from God, not man. One of the statements of the U.S. Declaration of Independence says this: “We hold these truths to be self-evident, that all men are created equal, that they are endowed by their creator with certain unalienable rights that among these are life, liberty and the pursuit of happiness.”
Jonah, throughout this book, is characterized by prejudice. That character trait has no business in the child of God. One way or another God would work to deliver His prophet from that destructive opinion.
On the other hand, God loved the Ninevites and desired that they be saved from destruction.
This is also a New Testament message.
John 3:16
For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.
Are there groups that you would never bother with? Give them a chance.
Think about it.
Gary