Two best friends for life.
....maybe even more children for Abraham to rejoice over.
yes, they threw a party when Abraham put them out for his wife because of her jealousy - He and she suffered because of her own doing.
The jews still suffer today from it all as do others at the hand of ishamels offspring.
Of Ishamel, God says:
Genesis 16:12 He will be a wild donkey of a man; his hand will be against everyone and everyone's hand against him, and he will live in hostility toward all his brothers."
The only blessing given to Ishmael
was for Hagar, because of sarah and abraham using her then throwing them out - (promise made to HAGAR, by God,
not the original promise made for the son that God later provided to abraham)
Genesis 17:20 As for Ishmael,
I have heard you(Hagar); behold, I have blessed him and will make him fruitful and multiply him greatly. He shall father twelve princes, and I will make him into a great nation.
Clearly this is not the fulfillment of the promise made to abraham, God promised Him descendants of one nation - Israel.
The other was an entirely different promise. Keep showing your ignorance of scripture, loads of men and women like you twist the word, to self fulfill and teach doctrines of demons, nothing new.