The difference is between relationship and fellowship. You may go in and out of fellowship, but your relationship cannot be changed by any action of your own. You can no more change your spirit now than you could make yourself born again. It took the death, burial, and resurrection of the Son of God to bring about your new birth miracle. That miracle cannot be reversed without an equally miraculous action by God.
Most of warnings in the NT about losing something are merely losses to your temporal salvation... table rights. Health. Prosperity. Sin is wrong and unrepentant sin can bring suffering. But that suffering is in the flesh. You will reap in the flesh the corrupting you sow in the flesh. But eternal life is, well, eternal.
are they ?.. shut out . the door shut , weeping and gnashing of teeth , .. as i said before why warn against something that can never happen .. because once we are in heaven with the lord, transformed into immortality .. is cannot happen . but we are not there yet . we have it
"by faith "and when he returns we shall have the actual thing -it wont be by faith once we re there .
so if we fall from faith ,, and the scripture is clear we can fall away from our faith and that the love of many wil wax cold (is happening all around us already . that is evident by the vast number of professing christians which have never spoken the gospel to another human being )
the warnings are there because we hold fast to the promise of what is to come .. taking hold of it BY FAITH as IF it already is . Lose faith and you won't be saved .because he also says those who endure to the end will be saved , not those who begin and then look back .
its nothing to be upset about ,the warnings are there to remind us of the danger. but as long as we abide in him and he in us and we walk in obedience to him,we have nothing to fear . for when we are born of him and h dwells in us we do not continue to sin ,we cannot continue in the practice of sin .
so there is no need to be fearful of the warnings the warning are also words of Love .
but they are not there because they warn of what canot happen ,but because they warn of what we must not
allow to happen . for it cannot happen unless we allow it .
and again - it can only happen if we persist in disobedience -and why would any decile of the lord JEsus do that when we love him.. and we know that we love him when we love one another and when we obey him.
so if we are loving one another and obeying him we know he is in us and we in him .
of course if we are not walking in obedience to him,, we should certainly repent quickly . for the spirit of antichrist works in the children of disobedience .