Jacob expressed these his last wishes three times. Such is the requirement of good breeding in preferring a request.
In the last period of Jacob's life, one can see how true it is that "even a king depends upon favors in a strange land." Jacob, the man for the sake of whose merits the whole world was created, for the sake of whom Abraham was delivered from the fiery furnace, had to ask services of others while he was among strangers, and when Joseph promised to do his bidding, he bowed himself before his own son, for it is a true saying, "Bow before the fox in his day," the day of his power.