Lech Lecha: Go Forth

Abraham is the father of all Jews and all Gentiles who believe in the promised Messiah of God. He is the paradigm of how one becomes right with God through faith in the promised seed (Messiah). No change of ethnic status was required or needed; just faith in what God had promised. Faith is what secured the covenant and resulted in Merit for Abraham. And how that worked for Abraham would be how that would work for everyone else.