This particular post will contain two links from two different sources. The first link is directly below and I will provide the first paragraph of it directly below the link : https://www.hebrew4christians.com/Articles/Israel/israel.html
When studying the Jewish roots of Christianity, certain questions often arise regarding the nature of the “Church,” the nature of “Israel,” and the relationship between them. Do Gentile Christians become “Jewish” on account of their relationship to Jesus? Does the “Church” somehow replace the Jewish people in God’s plan as the “new Israel”? Exactly how should we understand the relationship between the Church and Israel today?
In general, Christian theology has developed three different interpretative systems that attempt to answer such questions:
1. Replacement Theology
The Church and Israel refer to the same group of people.
2. Separation Theology
The Church and Israel refer to different groups of people.
3. Remnant Theology
The Church and Israel overlap in some manner.
The first link is a lengthy post but it is very informative and I highly recommend that you read through it’s entirety.
The second link is here: https://redeemedmind.com/2020/09/25/israel-and-salvation-romans-11/ and it deals specifically with chapter 11 of Romans and how it applies to Israel and the Church.
This is an important subject for all Christians to be aware of because you are going to encounter Christians that hold different perspectives on this subject. I’m not going to tell you which way I lean but the second link is a hint.
Would love to hear feedback on this if you have the time.
Worthy is the Lamb! Blessings!