If the last sentence is the foundation for the point in the second - I don’t see the reasoning: why must God be known of, in order for an atheist to be a moral person ? Why can’t God be God incognito, as much so and as fully so as when He is named ? Is He unable to do good through men, unless they are aware of Him ? It’s not the atheists who are making claims to be more or less moral than those not in their “set” - it’s Christians who do that; it’s such a silly thing for Christians, of all people, to do. If we are moral at all, the praise for that is never ours, always God’s; Who will humble those who boast of themselves, and who raises the lowly.