Which man do Jews call there father?

Answer 1

Abraham

Answer 2

Jews refer to themselves and are referred to in the Hebrew Bible as the Children of Israel (Jacob), so Jacob gets some credit here. Many Jewish prayers remember all three patriarchs Abraham, Isaac and Jacob as "our fathers" (Hebrew "avoteinu"), and, finally, God is addressed in several prayers as "our father" (Hebrew "avinu"). A notable example is "Avinu Malkeinu" (a penetential prayer beginning "Our Father, our King").