Because she despised Hagar after Hagar conceived a child with Abram, but she wasn’t.
Gen 16:1-6
Ishmael
Gen 16:11
The land of Canaan.
Every man and child among them were to be circumcised.
Abraham fell on his face and laughed because he thought he was too old.
The Lord said “Is anything too hard for the Lord?”
Yes. Abraham and Sarah had the same father but different mothers.
God told Abraham to sacrifice his only son Isaac.
God provided a ram.