Agreed. No, he would not lose his "sonship" but his inheritance was gone.
If we die while squandering our inheritance (eternal life), where would that leave us? We are still children of God, but would we then lose our inheritance? Yes, unless ... like the prodigal son ... we confess, repent and turn back to a life in Him.
When we are "saved" God gives us His eternal life, which is an infinite commodity. So I have to ask, if we can squander it, just how infinite was it in the first place.
If we could squander it what kind of assurance would we have that we had a home awaiting us in Heaven?
"[12]He that hath the Son hath life; and he that hath not the Son of God hath not life. [13]These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God." - I Jn 5:12-13
If we could squander it or turn our back on it after receiving it, how could we ever know?
BTW, glad to see you back. I hope your wife and child are doing better. Thanks, for the Scripture readings.
-ksen