He did? Or... it's people that have invented different Gods to try and explain how everything came to be and why we are here? Every God has or had people that knew them and believed in them. But they are all different.He wanted to be known so created us to know Him.
And how do Baha'is explain that? By saying that people made-up stories about their Gods that weren't true. But, of course, what the Baha'is say about God... that is true. You say that God is invisible and unknowable except for what the manifestations of God tell us about God.
But again, the things about God from the previous manifestations have gotten distorted and misunderstood. So, the only reliable and correct information about God comes from the teachings of Baha'u'llah, the prophet of the Baha'i Faith. How convenient.