What a great loophole!
Acts 16:30-31, Paul's talking, they ask him
“what must I do to be saved?”
“Believe in the Lord Jesus, and you will be saved—you and your household.”
Why don't they ever mention this? Here I thought I had to believe. Come to find out, all it takes is one member of the household. Got a crazy relative living with you? You're covered. Hell, you could rent out a room in the garage, that's part of your household, right? Salvation--easy peasy.