Paul is speaking of the church in Romans specifically about how the gentiles are grafted into Israel, the olive. This is not carnal Israel but the people in Hebrews 11, Saints before Christ. Abraham, Noah, Able and Enoch were not of Israel but others were and they all were converted having the Holy Spirit. From Paul’s day until now the carnal Israelites are blinded, Romans 11:7The 144k is the Jewish remnant described in Rom 9-11 who will make up the one body of Christ.