How do we know God's hatred of sin is true?

The Bible clearly articulates God's hatred for sin. In 1 John, sin is defined as the transgression of God's law, and throughout history, God has shown His aversion to sin through judgment and correction. From the expulsion of Adam and Eve from the Garden of Eden to the destruction of Sodom and Gomorrah, instances abound where God's hatred for sin is depicted. However, it is at the cross where this hatred is most poignantly illustrated; God did not spare His own Son, Jesus Christ, as Him bearing the sins of the world provoked the full wrath of God against sin. This ultimate act of justice underlines that sin is a significant affront to God and carries severe consequences.