ויהי כל נפש. פי' עם יוסף שהיה במצרי' הי' שבעי' ואז לא יצטרך למנות יוכבד שנולדה בין החומו' מהר"ר שלמה בן פרחון ז"ל, לכך מנאן עכשו אע"פ שמנאן בחייהן לפי שהיה ר"ל אחר כן וירבו ויעצמו להודיע לך שארבעים [ששבעים] נפש לבד עצמו ורבו עד שש מאות אלף רגלי: 'ויהי כל נפש וגו, “the total number of people, etc;” the number seventy includes Joseph who had already been in Egypt. When you accept this explanation, you do not need to consider Yocheved as having been conceived in the land of Canaan and having been born at the crossing point into Egypt. (Attributed to Rabbi Shlomoh ben Parchon) This is also the reason why their number is repeated here although the Torah had given details already when it described Yaakov’s departure for Egypt in Genesis chapter 46. The purpose of repeating it here is to demonstrate the phenomenal increase in the numbers of Hebrews beginning with their arrival there. Forty male Hebrews who had arrived there increased to over 600000 in the space of 210 years. (Sh’mot Rabbah 1,7)