Agreed!If you read the Bible and keep Jesus’ commands, you are a child of God. If you do not read the Bible but still keep Jesus’ commands, you are a child of God, by sincerity.
The verse that leads me to believe that, is this::
“14 (Indeed, when Gentiles, who do not have the law, do by nature things required by the law, they are a law for themselves, even though they do not have the law, 15 since they show that the requirements of the law are written on their hearts, their consciences also bearing witness, and their thoughts now accusing, now even defending them.)
This is one reason a person should be very slow about rendering a final judgment against another simply because the other is not connected to any established organized church group carrying a Christian designation. Some will too quickly state that a Mormon, or a JW or a Catholic or even a Muslim is already lost because of their connection to such a group. What God looks at, always, is the heart of the person. Sitting in the supposedly "right" pew will give us no brownie points in God's book any more than sitting in the supposedly "wrong" pew will condemn us.