God did not end His promises to the "seed" of Israel.
He fulfilled them through the sacrifice of His Son at Calvary.
Joh 19:30 When Jesus therefore had received the vinegar, he said, It is finished: and he bowed his head, and gave up the ghost.
Rom 1:16 For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek.
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And per God's Word, just who are... the Jews?
1. Per God's Word, and even the Jewish historian Josephus who lived around 100 A.D., the Jews represented ONLY the southern kingdom of three tribes and the foreigner converts living in the southern lands of Judea-Jerusalem.
After the split of 1 Kings 11 forward, the Jews were called the "kingdom of Judah", or "house of Judah", or just "Jerusalem", or even just "Judah" in God's Word. Only those who have studied the Old Testament Books would know about this. These Jews were made up of the tribes of Judah, Benjamin, and Levi, and a small remnant of the northern ten tribes that refused Jeroboam's idols (2 Chronicles 11:14-17). And the rest were foreigners that had crept in throughout Israel's history, like the Kenites of the land of Canaan, and the Canaanites Israel was not able to destroy, and many of the children of Esau which became Jews, king Herod himself having been an Idumean of the children of Esau. Josephus said the title of 'Jew' originated from the sole tribe of Judah.
2. The ten northern tribes were not known as Jews.
After God split old Israel in Solomon's day, He gave Jeroboam of the tribe of Ephraim to be king over Israel. This meant ONLY over the northern ten tribes that lived north of Jerusalem and Judea. (See 1 Kings 11).
The northern kingdom under Jeroboam was known as the "kingdom of Israel", or "house of Israel", or "Samaria" (it's captital), or just "Israel", or "Joseph", or "Ephraim". All of those titles are used for the northern ten tribe kingdom after Solomon's days.
This is why there is much Bible prophecy in the OT prophets that distinguishes the two separate kingdoms and houses. And to not recognize this in Scripture is to be Biblically illiterate.
Yet I have never claimed to be a Biblical scholar, but I'm well aware of all that, so how's that? It is because I have 'studied' the Old Testament Books along with The New Testament Books. Those not familiar with that Bible history reveal they have NOT... studied all their Bible! And that includes many preachers who preach The Bible in today's pulpits! What a shame, is all I can say, however... God did show in the OT prophets that would happen in the last days, that there would be a famine for hearing The Word of God, and looking everywhere for it and not finding it (meaning looking everywhere to get understanding in it, but not finding it.)