You mean what did he worry about, or what would worry him today?
He worried about people being unaware of God. Idolaters used their mixed-up semi-belief as an excuse for all kinds of depravities.
Today too, the world has become so secularized that God is rarely in the forefront of our thoughts.
Abraham, isaac, jacob, mosesAnswer:You meant to ask "Who are the forefathers of Judaism." There are only three (Talmud, Berakhot 16b); and they are Abraham, Isaac, and Jacob.
Abraham was the founder of Judaism.
Judaism originated with Abraham.
Traditionally, Abraham was the founder of Judaism.
Abraham From the song "Father Abraham"
Tradition holds that Abraham founded Judaism in Israel, around 2000 BCE.
For Judaism: http://judaism.answers.com/jewish-history/a-biography-of-abraham
Abraham Lincoln played NO role in the history of Judaism. You might be confusing him with Abraham the prophet.
Abraham.
Judaism
Judaism's roots are in the Hebrew religion of Abraham; and in the Israelite religion of Moses. According to tradition, "Judaism" as such began with the covenant between Abraham and God.
Abraham was the founder of Judaism, in the Holy Land.