The apostle Paul wrote "They are not all 'Israel' who are of/from Israel," and also that there is an "Israel of God". "Israel" today, in the sense that God recognizes, as I understand it, are those who are in covenant with Him, by sacrifice. This sacrifice was made by the Messiah, Jesus. The present-day secular State and even nation of Israel is not same entity as the ancient covenant people of God called Israel.
Discussion
While the covenant view is disputed, I think it is consistent with what Paul is saying. Suggesting that the church is not Israel seems misguided by those who want to distance themselves from the historic church.