he accomplished freeing slaves
Tradition states that Abraham (18th century BCE) founded Judaism, and Moses later received the Torah from God.See also: Timeline of Jewish history Abraham, tenth-generation descendant of Noah, of Hebrew lineage, was the son of Terah, uncle of Lot, father of Isaac, grandfather of Jacob, and ancestor of the Israelites. His story is in Genesis ch.11 (end), through ch.25. Jewish tradition states that he was the first to actively spread belief in One God; and it is in his merit that Jews continue to exist (Genesis 18:19, and ch.17). By the time of Abraham, the area where he lived was full of pagan cults; they were polytheistic, worshiping multiple deities. Abraham became the first to advance the idea of ethical monotheism: the worship of One God, and the appropriate ethical code of conduct. Nimrod, the idolatrous tyrant, had brought Abraham's father (Terah) from the Semitic ancestral seat near the confluence of the Balikh and the Euphrates, and instated him in a position of power in his army in the royal Babylonian city of Ur, where Abraham was born. Nimrod persecuted any who would question his idolatrous cult. As a young man, he remonstrated with passersby in public, demonstrating to them the falsehood of their idols; and our tradition tells how he was threatened and endangered by Nimrod. The gravesite of Abraham, Isaac and Jacob and their wives (Genesis 49:29-32) is located in Hebron and has been known and attested to for many centuries.
Archaeology
Abraham came from ancestry that had been aware of God a couple of centuries earlier but had afterwards slipped into idolatry (Joshua 24:2). (See: How did polytheism start.)
The Kuzari (Rabbi Judah HaLevi, 1075-1141) states that Abraham was gifted with high intelligence; and, as Maimonides (1135-1204) describes, Abraham didn't blindly accept the ubiquitous idolatry. The whole populace had been duped, but the young Abraham contemplated the matter relentlessly, finally arriving at the conclusion that there is One God and that this should be taught to others as well. This is what is meant by his "calling out in the name of the Lord" (Genesis ch.12).
Subsequently, Terah relocated to Harran; and it is here that Abraham began to develop a circle of disciples (Rashi commentary, on Genesis 12:5).
Later, God told Abraham in prophecy to move to the Holy Land, which is where he raised his family.
He continued his contemplations, eventually arriving at the attitudes and forms of behavior which God later incorporated into the Torah given to Moses. (See: Thirteen basic Jewish beliefs)
All of the practices of Abraham were based upon the ways of God, which Abraham comprehended through his contemplations. These, and similar personality traits, were the teachings of Abraham and his descendants (unlike idolatry, which had tended to go hand in hand with cruel, licentious and excessive behavior, since the caprices which were narrated concerning the idols were adopted as an excuse to imitate those types of behavior). (See: Cruelties of the polytheists)
It is therefore clear why God expresses His love for Abraham (Isaiah 41:8) and calls Himself the God of Abraham (Genesis 26:24), and says that Abraham obeyed Him fully (Genesis 26:5). And this is why Abraham is credited with having begun the religion which became known as Judaism. (However, Abraham and his descendants observed their traditions voluntarily, until the Giving of the Torah to Moses 3325 years ago, when God made it obligatory.)
he was the father of all nations. he also taught the people to believe in one god
Abraham taught the belief in One G-d (monotheism). He was the progenitor of the Jewish people.
Abraham spread the word of the single God. He was like a preacher. That was Abrahams major accoplishment
Abrahams challenges were that he had to protect his kids.
Doris Abrahams died in 2009.
Rehane Abrahams was born in 1970.
Doris Abrahams was born in 1921.
Sidney Abrahams died in 1957.
Sidney Abrahams was born in 1885.
Israel Abrahams died in 1925.
Israel Abrahams was born in 1858.
Bennie Abrahams died in 1990.
Bennie Abrahams was born in 1907.
Ottilie Abrahams was born in 1937.
Peter Abrahams was born in 1919.