Abraham is human being's representative of an Old Testament covenant that has merged with the Messianic covenant through Jesus, human being's New Covenant covenant. Inclusion in these merged covenants which are necessary for salvation is summed up in one word, FAITH. Faith in what? This podcast answers this question.

Yahweh established a covenant with Abraham and Sarah (see previous 3 podcasts) and Yahweh passed those covenant promises on the their only son, Isaac. But Isaac and his wife Rebekah had twin sons. Which of the two would inherit the covenant promises and responsibilities? What criteria would Yahweh use to choose between the two?