Peter Pett's Commentary on the Bible
Genesis 47:27-31
The Family Tribe Prosper - Jacob's Plea (Genesis 47:27)
‘And Israel dwelt in the land of Egypt, in the land of Goshen, and they obtained possessions in it and were fruitful, and multiplied greatly.'
This summary states what happened after the famine was over and covers many years. Jacob and the Family Tribe prosper greatly (by now the name ‘Israel' is beginning to be attached to the tribe - note the plural, ‘they obtained') and become even wealthier. Furthermore they continue expansion, with nothing to hinder them, and many children are born to the tribe. They ‘multiply greatly.' Their move appears to be a success. They see no reason to return to Canaan. But Jacob's heart is still there.
‘And Jacob lived in the land of Egypt seventeen years. So the days of Jacob, the years of his life, were one hundred and forty seven years, and the time drew near that Israel must die, and he called his son Joseph and said to him, “If now I have found favour in your sight put, I pray you, your hand under my thigh and deal kindly and truly with me. Do not bury me, I beg of you, in Egypt, but when I sleep with my fathers you will carry me out of Egypt and bury me in their burial place.” And he said, “I will do as you have said.” And he said, “Swear to me.” And he swore to him. And Israel bowed himself on the bed's head.'
Jacob lives another seventeen years, reaching one hundred and thirty seven. It is probable that we are not to see this as too literal. It is doubtful if account was kept of age so accurately and there are grounds for thinking that the patriarchal ages are to be seen as round symbolic numbers. For this see The Use of Numbers in the Ancient Near East and in Genesis. But he is clearly of a great age (compare Genesis 47:9).
Now, with death approaching, he is concerned that he should be buried with his fathers in the land of Canaan. He therefore calls Joseph to come to him privately for he has a favour to ask him which only Joseph can guarantee, for what he will ask may well conflict with recognised Egyptian protocol.
“If I have found favour in your sight.” He remembers the high position occupied by his son. ‘Put your hand under my thigh' - a typical type of oath, possibly seen as swearing on his life producing functions (compare Genesis 24:2). ‘Swear to me.' This will not only put Joseph under obligation but will enable him to thwart any other plans by anyone else. No one would dispute an oath to a dying man and it will give him leverage with Pharaoh whose permission will have to be sought (see Genesis 50:4).
“And Israel bowed himself on the bed” s head.' This probably represents the weak old man bowing to his son, assisted by the bedhead, partly because of who he is, but also in gratitude at his firm promise. It stresses how weak he is. But it may be partly because of his blindness (Genesis 48:10). The end was not to be long in coming.
Jacob Adopts Ephraim and Manasseh and Gives Them His Dying Blessing (Genesis 48:1)