Yes, the Israel who is of God gets saved, as God saves His family.
Cain was of the Devil and look what Cain did.
Romans 8
28 And we know that all things work together for good to those who love God, to those who are the called according to
His purpose. 29 For whom He foreknew, He also predestined
to be conformed to the image of His Son,
that He might be the firstborn among many brethren (brothers).
Ephesians 3
14 For this reason I bow my knees to the Father [f]of our Lord Jesus Christ, 15 from whom the whole family in heaven and earth is named,
1 John 3
1
Behold what manner of love the Father has bestowed on us, that we should be called children of [a]God! Therefore the world does not know [
b]us, because it did not know Him. 2 Beloved, now we are children of God; and it has not yet been revealed what we shall be, but we know that when He is revealed, we shall be like Him, for we shall see Him as He is. 3 And everyone who has this hope in Him purifies himself, just as He is pure.
God gives to His Son His children, (Hebrews 2:13 “Here am I and the children whom God has given Me.”), that they were the Fathers before giving them to Christ as believers points to them as being chosen in Him before the foundation of the world, before time began, God knew us. Just like God says of Jeremiah, so this is not just a new concept of the New Covenant. This is one of the deep things of God.
The Prophet Is Called
4 Then the word of the Lord came to me, saying:
5
“Before I formed you in the womb I knew you;
Before you were born I sanctified[a] you;
I [b]ordained you a prophet to the nations.”
6 Then said I:
“Ah, Lord God!
Behold, I cannot speak, for I
am a youth.”
7 But the Lord said to me:
“Do not say, ‘I
am a youth,’
For you shall go to all to whom I send you,
And whatever I command you, you shall speak.
8 Do not be afraid of their faces,
For I
am with you to deliver you,” says the Lord.
John 17
6 “I have [
c]manifested Your name to the men whom You have given Me out of the world. They were Yours, You gave them to Me, and they have kept Your word. 7 Now they have known that all things which You have given Me are from You. 8 For I have given to them the words which You have given Me; and they have received
them, and have known surely that I came forth from You; and they have believed that You sent Me.
Ephesians 1
3 Blessed
be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly
places in Christ, 4 just as He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love, 5 having predestined us to adoption as sons by Jesus Christ to Himself, according to the good pleasure of His will, 6 to the praise of the glory of His grace, by which He [
a]made us accepted in the Beloved.
2 Timothy 1
8 Therefore do not be ashamed of the testimony of our Lord, nor of me His prisoner, but share with me in the sufferings for the gospel according to the power of God, 9
who has saved us and called us with a holy calling, not according to our works, but according to His own purpose and grace which was given to us in Christ Jesus before time began, 10 but has now been revealed by the appearing of our Savior Jesus Christ,
who has abolished death and brought life and immortality to light through the gospel, 11 to which I was appointed a preacher, an apostle, and a teacher [
c]of the Gentiles. 12 For this reason I also suffer these things; nevertheless I am not ashamed, for I know whom I have believed and am persuaded that He is able to keep what I have committed to Him until that Day.