God is on several accounts called the God of Abraham, Isaac, and Jacob. (Even by Jesus himself and by his apostles he is called their God. e.g. Mk 12:26 /Acts 3:3
I quote from this answer (from Why is God called the God of Abraham, Isaac, and Jacob?):
In the tanakh Avraham, Yitzchak, and Yaakov are the three patriarchs of the Jewish people, beginning with a covenant with Avraham (Gen 12, 15, 17) and culminating in God revealing himself and giving his torah (Ex 20) to the family of Israel (i.e. Yaakov, after God's messenger renamed him (Gen 32)). God speaks directly to these three patriarchs. God introduces himself as "God of Avraham [, God of Yitzchak, God of Yaakov]" several places in torah, including:
Gen 26:24, to Yitzchak: "I am the God of Avraham your father; fear not..."
Gen 28:23, to Yaakov in a dream, as he fled his brother Eisav: "I am the Lord God of Avraham your father, and the God of Yitzchak..."
Ex 3:6, to Moshe at the burning bush: "I am the God of your father, the God of Avraham, the God of Yitzchak, and the God of Yaakov..."
Ex 3:15-16, similarly (God telling Moshe what to tell the people)
Ex 4:5, instructing Moshe to throw down his staff so it might become a snake: "...that they may believe that the Lord God of their fathers, the God of Avraham, the God of Yitzchak, and the God of Yaakov, has appeared..."
When we, however, read the encounter of God with his three servants (and the fathers of Israel), we do not find this intimacy reflected.
In Genesis 17:1, YHVH said to Abram: "I am El Shaddai. Walk before me and be perfect."
In most translations that follow the Massoretic Text we read:
'I am God Almighty.'
I was amazed when I consulted the Septuagint (3rd Cent. B.C. Greek translation) to see how the early scribes had translated El Shaddaj. What did I find? They wrote not: EGO EIMI HO PANTOKRATOR - I am God Almighty. They simply had: EGO EIMI HO THEOS SOY - I am y o u r God
Is it possible that the pre-Massoretic Hebrew text had a different reading of this passage and similar ones regarding the relationship of God towards Abraham, Isaac, and Jacob?