It is almost impossible for me to address this verse and others like it.
The reason is that I do not have the same foundation, that the rest of the churches in the world have.
Therefore my belief would not be understood by you and possibly rejected by most if not all.
Without explaining I will try to give you some passages to read.
Eze 14:14 Though these three men, Noah, Daniel, and Job, were in it, they should deliver but their own souls by their righteousness, saith the Lord GOD.
Ezekiel 14 which speaks about Daniel, Job and Noah is tantamount to our days. In other words we are not living in the church age but rather in the ages similar to Noah, Daniel and Job.
But Paul, the Apostle was living in the church age, similar to Moses in the wilderness, which also was considered the church in the wilderness.
Thus these men Paul, Moses, the Apostles were called and given power beyond normal men to determine the salvation of the men whom they were called to redeem. In fact Jesus told his disciples, greater works than I have done, you will do.
Matthew 18:18 Verily I say unto you, Whatsoever ye shall bind on earth shall be bound in heaven: and whatsoever ye shall loose on earth shall be loosed in heaven.
John 20:23 Whose soever sins ye remit, they are remitted unto them; and whose soever sins ye retain, they are retained.
I will not address any question like this again because the subject is a thousand times more complicated than the verses that I have quoted to you, and the verses in and of themselves do not prove anything. There are just too many more verses that you would have to understand to appreciate my belief. But as I have told everyone before each man is responsible before God for his own soul. The only tools or witness that God has given to us is the bible and the Holy Spirit. Thus I demand that you do not listen to me or accept my belief or understanding but rely on the Spirit of God to enlighten you.
1Jn 2:27 But the anointing which ye have received of him abideth in you, and
ye need not that any man teach you:
but as the same anointing teacheth you of all things,
and is truth, and is no lie, and even as it hath taught you,
ye shall abide in him.
1Jn 5:9 If we receive the witness of men,
the witness of God is greater: for this is the witness of God which he hath testified of his Son.
1Jn 5:10 He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.
What has been taught for 2000 years by the church fathers, I have rejected, therefore I think you should address your questions to some church leader as I am sure that is where everyone's foundation is.