Almost as long as there has been an Israel, there has been an Israelite remnant.
In its very first generation, Joseph explained his own suffering and subsequent exaltation to his brothers in this manner: “God sent me before you to preserve for you a remnant on earth, and to keep alive for you many survivors.” God may have been the author of the worldwide famine they were experiencing, but he had made provision for Jacob’s family so that they would not be eliminated from the earth.
However, not all who went to Egypt and were thus preserved were men and women of faith.