How do we know God's chosen people?

The apostle Paul, in his letters, especially addresses the distinction between those who outwardly belong to Israel and those who are truly God's people based on faith. Romans 9:6-7 explains that not all who are descended from Israel are part of Israel, which implies that true identification as God's people comes through faith in Jesus Christ and the inward work of the Holy Spirit. This spiritual lineage is evidenced by a heartfelt response to the gospel and a genuine relationship with Christ, leading to a life that seeks to obey God.