The "Covenant of the Pieces" between Gd and Avraham happened before the promise of an heir: Tos. Berachot 7b #1
Avraham wanting to know what merit would save the Jews when they sinned, during and after the Temple Era: Taanit 27b; Megillah 31b
Avraham asking Gd for a guarantee that his descendants would get Israel: Nedarim 32a
Gd telling Avraham to forget Astrology because it would have no effect on the Jews, and that he would indeed have a son: Shabbat 156a-b; Nedarim 32a
The Jews not wanting to rely on Avraham's mercy in the Future, because he didn't ask for mercy when he heard that his children would be avadim: Shabbat 89b
Gd's request that the Jews loot Egypt, to fulfill the promise of the "Covenant of the Pieces": Berachot 9a-b
Avraham's age at the "Covenant of the Pieces": Tos. Berachot 7b #1
When Jacob sent Joseph from Chevron, it was according to Gd's plan, as Gd had told Avraham that his descendants would be strangers in a land which would not be theirs: Sotah 11a
