You have to look just a little deeper at what they said...
John 8:33
33 They answered Him, "We be Abraham's seed, and were never in bondage to any man: how sayest thou, 'Ye shall be made free?'"
KJV
That coupled with Jesus declared they were of their father the devil, and the first murderer, pointing to Satan and Cain, reveals those were not truly... of Abraham's seed.
See, the Jews said: - We be Abraham's seed,...John 8:v.33KJV
JESUS said affirmatively: I know that ye are Abraham's seed...John 8:v.37KJV (Positive)
Didn't you read? I posted what JESUS said. And you? Your spirit surreptitiously denied the assertion of Jesus, in other words, you don't say the same JESUS said. Why? What spirit is that?
The children of Israel did serve three captivities, one in Egypt, another by the ten tribes by the Assyrians, and another by Judah to Babylon. So we know their words don't place them as descendants of Israel.
Trying to justify or hide the false interpretation, your spirit changes the focus of what was posted, jumping from Abraham to the captivity of Israel. So, speaking no longer of Abraham, but of Israel: Which Israel are you talking about?
Why did GOD, in the OT, punish severely your Israel as you said, the Israel of your belief? And why does the same Israel now, in the NT, suferred the most chastisement of its history being banned from their land for 1878 years, from year 70 to 1948? Deuteronomy 28:v.15 to 68 explain the why , 53 verses of curses.
Romans 2:v.5 to 11
5 But after thy hardness and impenitent heart treasurest up unto thyself wrath against the Day of wrath and revelation of the righteous Judgment of GOD; (this Day arrived, that is the seventh and last Day, or seventh and last millennium, the millennium of Vengeance, the millennium of Judgment, the Judgment Seat of Christ)
6 Who will render to every man according to his deeds:
7 To them who by patient continuance in well doing seek for glory and honour and immortality, eternal life:
8 But unto them that are contentious, and do not obey the truth, but obey unrighteousness, indignation and wrath,
9 Tribulation and anguish, upon every soul of man that doeth evil, OF THE JEWS FIRST, and also of the Gentile;
10 But glory, honour, and peace, to every man that worketh good, TO THE JEWS FIRST, and also to the Gentile:
11 For there is no respect of persons with GOD .
Revelation 6:v.15-17
15 And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains;
16 And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb:
17 For the great day of his wrath is come; and who shall be able to stand?
For our God is a consuming fire. Hebrews 12:v.29