If God doesn’t exist, then there is no evidence of his existence.
If God does exist, then everything is evidence of his existence.
Phlogisten doesn't exist. But for many years there was a belief in its existence because there was a manifestation [fire] that could be attributed to it. Unless you embrace a "reverse God of the Gaps", there isn't any logical content to the statement until we have discovered everything there is to discover, and find no evidence of God in the process.
The second statement means nothing because it assumes the existence of a thing in order to affirm the existence of everything else. But we already know other things exist. We don't know that God exists. That is a matter of faith.