This Abraham, is of Genesis 11, a descendant of Shem[Eber/Hebrew]. Terah his father: and Abraham = father of the multitude-fathered Isaac. Isaac's mother was Sarah = princess. She was the mother of ONE nation: Isaac, Jacob, and the 12 Tribes.
This Abraham was a great man, because he had faith[Heb.11:8-10]. When GOD spoke to him, he moved, he acted, he believed. This separates this Abraham, from cling-on. Abraham recognized Melchizedek as Christ Jesus, and honored HIM accordingly-he paid a tithes for all his descendants; I'm "grafted" in.
The Word states that this Abraham was quite wealthy. He and Sarah were fathered by the same man-different mothers. When ignorance calls Abraham a wimp and a liar - the LIGHT say that he is neither. Actually to be pro-LIGHT, is not anti-anything.
In John 8:33-44 we have Tares[Matt.13:38] attempting to convince Christ that they, are descendants of Abraham-and were busted. Always look at the "works" or the "fruit". Descendants Love, Honor, and Respect Christ; and certainly murder should not be on the priority list for the day.
Our LORD promised to make Abraham a great nation, and through him, others would be blessed.