How Will “All Israel” Be Saved in Romans 11:26? (Part 1)

Throughout almost all of church history, the church has been composed of a Gentile majority. Yet, Scripture says that all Israel will be saved. So, how should we understand this promise?
Throughout almost all of church history, the church has been composed of a Gentile majority. Yet, Scripture says that all Israel will be saved. So, how should we understand this promise?