Final answer:
God promised to bless Abraham's descendants through his son, with the Covenant indicating that the followers would be granted a prosperous land and success. In Christianity and Judaism, Isaac is recognized as the son through whom the promise is fulfilled, whereas Ishmael is honored in Islamic tradition.
Step-by-step explanation:
The Covenant made between God, referred to as Yahweh, and Abraham is a foundational story in the Abrahamic religions, namely Judaism, Christianity, and Islam. This Covenant involved a promise that God would bless not only Abraham but also his descendants through his son, and they would inherit a prosperous land. According to the Jewish and Christian traditions, this promise was extended through Abraham's son Isaac, while Islamic tradition states that the blessings and the lineage continued through Ishmael, Abraham’s son with his servant Hagar. This Covenant is significant for all three religions as it establishes a special relationship between God and the followers, which includes being given a prosperous land and the success of their descendants as numerous as the stars.