How does Abraham and Moses tie into the old testament of Judaism?
Answer The Nation of Israel are the descendants of Abraham, Isaac and Jacob, who went down to Egypt from Canaan (Israel), came out of slavery there to receive the Torah (“Old Testament”) given by G-d to Moses at Sinai, returned to Israel to create a commonwealth, were exiled from there and spread throughout the world. So Abraham was the first Jew, and Moses was the Jewish leader who brought us out of Egypt and brought us the Torah.