How do we know that God has a people?

The existence of God’s chosen people is affirmed throughout Scripture, starting from the promise made in Genesis, through the calling of individuals such as Abraham, and culminating in the New Testament church. God’s people are those whom He has eternally loved and elected, as stated in Ephesians 1:4-5, showing that His choice is rooted in His sovereign grace. They are characterized by the new birth and adoption that occurs as they are brought into a familial relationship with God through Christ. The transformation from being 'not a people' to being called 'the people of God' illustrates the reality that God has a purpose in forming a people for Himself that extends to every kindred, tribe, and tongue.