After Abraham died, his son Isaac and later his grandson Jacob headed the family. How does this account of Isaac's birth show that God of
the Hebrew Bible was involved in what happened to the ancestors of the ancient
Israelites?

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.