Since we are made in God’s image (Genesis 1:26-27), we know something of what is good. Be that as it may, we are fallen (Romans 5:19), and our insight into what is good is debased. However, our whole idea of good is established in God and His goodness. The individuals who question God’s goodness do so as such as indicated by some standard of what is good and what is disgusting or evil. The very presence of that standard interfaces them to something past themselves – back to the Creator who made them in His image. That’s it!!!