Paul would not have given 'us' that warning against being conceited against his unbelieving brethren if he had thought they there was no hope for them.
In Acts 24, Paul also had hope there would be a resurrection for the unjust also. What does that tell you? Do you really think Paul had that hope in Acts 24:15 just to watch the unjust be thrown into the lake of fire?
Jesus disagrees.
John 5
28 Marvel not at this: for the hour is coming, in the which all that are in the graves shall hear his voice,
29 And shall come forth;
they that have done good, unto the resurrection of life; and
they that have done evil, unto the resurrection of damnation.
Or don't you think that anyone goes to hell?
25 For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
26 And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
In post #955, two Israels are identified and described by Paul.
28 As concerning the gospel, they are enemies for your sakes: but as touching the election, they are beloved for the fathers' sakes.
Paul is reiterating the two Israels of Romans 9:6-8; enemies of the gospel ("of Israel"), and the beloved election ("all Israel").
Scripture is unequivocal in identifying who the elect(ion) are. They are those of faith and obedience in and to Christ, who are saved by grace. (Romans 11:1-5)
Under no conditions or circumstances are enemies of the gospel ever numbered among the elect.
Only the elect are beloved.
Luke 18:7
And shall not God avenge
his own elect, which cry day and night unto him, though he bear long with them?
Romans 8:33
Who shall lay any thing to the charge of
God's elect? It is God that justifieth.
Colossians 3:12
Put on therefore, as the
elect of God, holy and beloved, bowels of mercies, kindness, humbleness of mind, meekness, longsuffering;
2 Timothy 2:10
Therefore I endure all things for the
elect's sakes, that they may also obtain the salvation which is in Christ Jesus with eternal glory.
Romans 11:7
What then? Israel hath not obtained that which he seeketh for; but the
election hath obtained it, and the rest were blinded.
1 Thessalonians 1:4
Knowing,
brethren beloved, your
election of God.
1 Peter 5:13
The
church that is at Babylon,
elected together with you, saluteth you; and so doth Marcus my son.
2 Peter 1:10
Wherefore the rather,
brethren, give diligence to make your calling and
election sure: for if ye do these things, ye shall never fall.
29 For the gifts and calling of God are without repentance.
The gifts and the calling are terms associated exclusively with those who have put their faith in Christ.
Upon whom does God bestow His gifts?
Romans 12:6
Having then
gifts differing according to the grace that is given to
us, whether prophecy, let us prophesy according to the proportion of faith;
1 Corinthians 12:1
Now concerning spiritual
gifts,
brethren, I would not have
you ignorant.
1 Corinthians 12:4
Now there are diversities of
gifts, but the same Spirit.
1 Corinthians 12:9
To another faith by the same Spirit; to another the
gifts of healing by the same Spirit;
1 Corinthians 12:28
And God hath set some in the
church, first apostles, secondarily prophets, thirdly teachers, after that miracles, then
gifts of healings, helps, governments, diversities of tongues.
1 Corinthians 14:12
Even so
ye, forasmuch as
ye are zealous of spiritual
gifts, seek that
ye may excel to the edifying of the
church.
God's gifts were not, and are not, bestowed upon those of Paul's countrymen according to the flesh who are enemies of the gospel.
They are bestowed exclusively upon God's "all Israel" remnant of His Holy Chosen People: His Church.
To them, and to no others, His gifts are
irrevocable (i.e. without repentance).
To whom is God's calling directed?
1 Corinthians 1:26
For
ye see your
calling,
brethren, how that not many wise men after the flesh, not many mighty, not many noble, are called:
1 Corinthians 7:20
Let every man abide in the same
calling wherein he was called.
Ephesians 1:18
The eyes of
your understanding being enlightened; that
ye may know what is the hope of his
calling, and what the riches of the glory of his inheritance in the
saints,
Ephesians 4:4
There is one body, and one Spirit, even as
ye are called in one hope of
your calling;
2 Thessalonians 1:11
Wherefore also
we pray always for you, that our God would count
you worthy of this
calling, and fulfil all the good pleasure of his goodness, and the work of faith with power:
2 Timothy 1:9
Who hath saved
us, and called
us with an holy
calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before the world began,
Hebrews 3:1
Wherefore,
holy brethren, partakers of the heavenly
calling, consider the Apostle and High Priest of our profession, Christ Jesus;
2 Peter 1:10
Wherefore the rather,
brethren, give diligence to make your
calling and election sure: for if
ye do these things,
ye shall never fall:
God's calling was not, and is not, directed to those of Paul's unbelieving countrymen according to the flesh, who are enemies of the gospel.
It is directed exclusively to God's "all Israel" remnant of His Holy Chosen People: His Church.
To them, and to no others, His calling is
irrevocable (i.e. without repentance).
Under no conditions or circumstances are unbelievers, enemies of the gospel, ever the recipients of God's gifts and calling.
31 Even so have these also now not believed, that through your mercy they also may obtain mercy.
32 For God hath concluded them all in unbelief, that He might have mercy upon all.
Indeed, God has mercy upon all, both Jew and Gentile.
Sadly, multitudes, both Jew and Gentile, do not respond to His mercy, and are lost.
Therefore, you do not understand the saving grace and mercy of our Heavenly Father for His chosen.
His Chosen are Scripturally unmistakable.
They are those who are faithful and obedient to His Son, irrespective of their physical DNA.
They are those who possess His spiritual DNA, exclusively.
Two genes -- faith and obedience.
And no others.