Judaism is centered around belief in one God and following the 613 mitzvoth or commandments. Key figures in Judaism include Abraham, who was willing to sacrifice his son Isaac at God's command, and Moses, who led the Jews out of slavery in Egypt. The core texts are the Torah, which contains the first five books of the Bible, and the Ten Commandments. Important rituals and celebrations include keeping kosher dietary laws, observing the Sabbath, and holidays like Rosh Hashanah, Yom Kippur, Hanukkah, and Passover.