>>24465249 ( LB)
It took Abraham and Sarah a very long time to conceive Isaac. God even promised Sarah it would happen despite her age. She laughed at the promise because of her age. Bottom line what is more important , obedience to God or a child. By the way , Abraham was confident God would provide a way to save his only son while not knowing God's full plan.
[Gen 22:5 KJV] 5 And Abraham said unto his young men, Abide ye here with the ass; and I and the lad will go yonder and worship, and come again to you.
Notice Abraham expected he and his son would return back to the base camp.