How do we know God is not like us?

In Psalm 50:21, God rebukes those who think He is like them: 'You thought I was altogether like you.' This emphasizes that God transcends human understanding and morality. As Isaiah 55:8-9 reminds us, 'For my thoughts are not your thoughts, neither are your ways my ways.' God's holiness and justice far surpass human notions, and He acts according to His divine purpose, not influenced by human values or opinions. This insurmountable gap between God's nature and human nature showcases the need for humility and reverence in our approach to God.