Jesus told us who knows God, and how that comes about...All that says is through creation and conscience, man knows of the existence of God.
It doesn't say He goes to every individual and gives personal revelation of Himself.
Of course one of our most vociferous FWers denies this Scriptural truth...
Matthew 11 verse 27 ~ All things have been entrusted to Me by My Father. No one knows the Son except the Father, and no one knows the Father except the Son and those to whom the Son chooses to reveal Him.