" Not everyone agrees to that. it says Keturah and not Hagar. Not everyone agrees it is Hagar. I personally do not as well.''
agree ^^
Does anyone knows for sure that Abraham really had had a son with her maidservant Hagar actually could have made it with anyone else passing near by and spread a lie to blackmail Abraham into accepting her child as any Arab would have done to gain a prominent position in the world then eventually didn't do anything to refute it.
You have read the Torah, haven't you? It is as clear as Black and White in the story of Abraham and Sarah that Sarah herself asked Abraham to have a child with her maidservant Hagar.. There is no question about this as the Torah spends several paragraphs describing the conversation.
See Chapter 16 of Genesis (Lech Lecha)
1. Now Sarai, Abram's wife, had not borne to him, and she had an Egyptian handmaid named Hagar.
2. And Sarai said to Abram, "Behold now, the Lord has restrained me from bearing; please come to my handmaid; perhaps I will be built up from her." And Abram hearkened to Sarai's voice.
3. So Sarai, Abram's wife, took Hagar the Egyptian, her handmaid, at the end of ten years of Abram's dwelling in the land of Canaan, and she gave her to Abram her husband for a wife.
4. And he came to Hagar, and she conceived, and she saw that she was pregnant, and her mistress became unimportant in her eyes.