Which scripture from the apostle Paul would you use to reach any of the above 3 points?
I am not sure why we limit our scriptural proof to the writings of Paul.
But here are a few that come to mind:
Paul and Communion and the reality of the body and the blood.
1 Corinthians 11:27-31 KJV
27 Wherefore
whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.
28 But let a man examine himself, and so let him
eat of that bread, and drink of that cup.
29 For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself,
not discerning the Lord's body.
30
For this cause many are weak and sickly among you, and many sleep.
31 For if we would judge ourselves, we should not be judged.
These verses are directed toward those who take the body of the Lord and do not understand (discern) what they are doing or why they are doing it. Not knowing the message behind the body and bread, they retain the liability to be sick, weak, and even die before their time. It is not
new judgment against them. It is the
standing judgment against all who are not in faith concerning these facts. This concept mirrors another passage by Paul that speaks of the blood and wine (rather than the bread and body).
The Hebrews believers and letting the words of the Gospel slip away from them.
Hebrews 4:1-3 KJV
1 Let us therefore fear, lest, a promise being left us of entering into his rest, any of you should seem to come short of it.
2 For unto us was the gospel preached, as well as unto them:
but the word preached did not profit them, not being mixed with faith in them that heard it.
3 For we which have believed do enter into rest, as he said, As I have sworn in my wrath, if they shall enter into my rest: although the works were finished from the foundation of the world.
Hebrews 3:12 KJV
12 Take heed, brethren, lest there be in any of you
an evil heart of unbelief, in departing from the living God.
Hebrews 10:29 KJV
29 Of how much sorer punishment, suppose ye, shall he be thought worthy,
who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?
Ultimately the Hebrew Christians were told not to let the truth of the Gospel "slip" or drift by them.
Hebrews 2:1 KJV
1 Therefore we ought to
give the more earnest heed to the things which we have heard, lest at any time we should let them slip.
Paul and the Corinthians who were told to keep in memory the Gospel:
Paul also speaks to the Corinthian Christians about not letting the words of the Gospel "slip."
1 Corinthians 15:1-4 KJV
1 Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand;
2
By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain.
3 For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures;
4 And that he was buried, and that he rose again the third day according to the scriptures:
These believers are doing something similar to the Corinthian believers. The Hebrew believers are discounting the
blood of Jesus (wine) and thereby risk forfeiting their salvation. The Corinthian believers are discounting the
body of Jesus (bread) and thereby risk forfeiting their healing and even their physical lives.
We can also see this principle played out in real life in the writings of Paul.
The Corinthian fornicator:
1 Corinthians 5:1-5 KJV
1 It is reported commonly that there is fornication among you, and such fornication as is not so much as named among the Gentiles, that one should have his father's wife.
2 And ye are puffed up, and have not rather mourned, that he that hath done this deed might be taken away from among you.
3 For I verily, as absent in body, but present in spirit, have judged already, as though I were present, concerning him that hath so done this deed,
4 In the name of our Lord Jesus Christ, when ye are gathered together, and my spirit, with the power of our Lord Jesus Christ,
5 To deliver such an one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus.
Here, a believer was fornicating. Paul calls upon them to deliver this man up to Satan for the destruction of the flesh so that his spirit might be saved on the day of the Lord. We can see the division here. A sin is committed, which, if not dealt with, may result in the man's ultimate damnation. Yet we see his life could be halted before it gets to that. Better that he dies physically (has his body destroyed by satan) than his spirit be damned forever. So, there are two areas of salvation. One is the spiritual life (by the blood/wine), and the other is the physical life (by the body/bread). Happily, we see the man repented, and all this was averted (2 Corin 2).
Paul reveals that the suffering of Christ redeemed us from the curse of the law.
From the book of Galatians:
Galatians 3:10-14 KJV
10 For as many as are of the works of the law are under the curse: for it is written, Cursed is every one that continueth not in all things which are written in the book of the law to do them.
11 But that no man is justified by the law in the sight of God, it is evident: for, The just shall live by faith.
12 And the law is not of faith: but, The man that doeth them shall live in them.
13
Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Cursed is every one that hangeth on a tree:
14 That the blessing of Abraham might come on the Gentiles through Jesus Christ; that we might receive the promise of the Spirit through faith.
A brief reading in the book of Deuteronomy details some of the curse of the law. The chapters are quite long, but we can narrow it down to one or two verses for brevities sake.
Deuteronomy 28:60 KJV
60 Moreover
he will bring upon thee all the diseases of Egypt, which thou wast afraid of; and they shall cleave unto thee.
61 Also every sickness,
and every plague, which is not written in the book of this law, them will the LORD bring upon thee, until thou be destroyed.
This details every sickness and plague in and outside the book of the law. It is part of the curse of the law that comes upon all who sin against the law. We are redeemed from this because Jesus was crucified. Healing and health are included in this atonement. Review chapters 27 and 28 for a list of all curses and blessings. We are redeemed from these curses by the suffering of Jesus.
Ephesians 1:3 KJV
3 Blessed be the God and Father of our Lord Jesus Christ, who
hath blessed us with all spiritual blessings in heavenly places in Christ:
There are others that just do not come to mind at this moment.