Acoustic Nun™ #18 Abramic Covenant Part 3

The covenant promises Yahweh gave to Abraham could not be fulfilled until Abraham and Sarah's line was established by the birth of their descendant. After this miraculous birth occurred, Yahweh unexpectantly tested Abraham and Sarah's faith in a most unexpected way. If they did not pass the test, would Yahweh take that as a sign that the covenant between them and Abraham was nullified?