Oh and you asked what Bible I use? I prefer the New King James or the New American Standard. If I think something is unclear I'll resort to the King James and if it's still unclear I look it up in Strongs.
Which Bible do you prefer?
So what happened to Ishmael after him and his mother were sent away?
Was Ishmael still part of Abrahams family and Issac?
God kept his promise to Hagar and Ishmael was the beginning of many nations. God made both Isaac and Ishmael exceedingly fruitful, but with Isaac and Isaac's descendants He established His covenant, named him as heir. God said Ishmael was Abraham's seed, but He also said "for in Isaac your seed shall be called" meaning Jesus.
I've put together the key verses about Ishmael:
10 Then the Angel of the LORD said to her, “I will multiply your descendants exceedingly, so that they shall not be counted for multitude.” 11 And the Angel of the LORD said to her:
“ Behold, you are with child,
And you shall bear a son.
You shall call his name Ishmael,
Because the LORD has heard your affliction.
12 He shall be a wild man;
His hand shall be against every man,
And every manÂ’s hand against him.
And he shall dwell in the presence of all his brethren.”
17 Then Abraham fell on his face and laughed, and said in his heart, “Shall a child be born to a man who is one hundred years old? And shall Sarah, who is ninety years old, bear a child?” 18 And Abraham said to God, “Oh, that Ishmael might live before You!”
19 Then God said: “No, Sarah your wife shall bear you a son, and you shall call his name Isaac; I will establish My covenant with him for an everlasting covenant, and with his descendants after him. 20 And as for Ishmael, I have heard you. Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly. He shall beget twelve princes, and I will make him a great nation. 21 But My covenant I will establish with Isaac, whom Sarah shall bear to you at this set time next year.” 22 Then He finished talking with him, and God went up from Abraham.
8 So the child grew and was weaned. And Abraham made a great feast on the same day that Isaac was weaned.
9 And Sarah saw the son of Hagar the Egyptian, whom she had borne to Abraham, scoffing. 10 Therefore she said to Abraham, “Cast out this bondwoman and her son; for the son of this bondwoman shall not be heir with my son, namely with Isaac.” 11 And the matter was very displeasing in Abraham’s sight because of his son.
12 But God said to Abraham, “Do not let it be displeasing in your sight because of the lad or because of your bondwoman. Whatever Sarah has said to you, listen to her voice; for in Isaac your seed shall be called. 13 Yet I will also make a nation of the son of the bondwoman, because he is your seed.”
Genesis 15-21