What does Exodus 33:19 mean?

God replied, 'I’ll make all my goodness pass right in front of you, and I’ll say my name, the Lord, out loud. I’ll show kindness to whoever I choose, and I’ll have compassion on whoever I want.' Exodus 33:19 - Modern Text Bible

(God promises to reveal His character—goodness, mercy, and freedom to act as He wills—rather than just a visual display.)