Genesis 45:9
Haste ye, and go up to my father, and say unto him, Thus saith thy son Joseph, God hath made me lord of all Egypt: come down unto me, tarry not: Haste ye, and go up to my father, and say unto him, Thus saith thy son Joseph, God hath made me lord of all Egypt: come down unto me, tarry not:
The call to hurry to Jacob came only after Joseph had tested his brothers and seen in them genuine repentance for selling him, and then made himself known to them as their brother. They had confessed their wrongs against him and felt relief to learn he was alive, for their remorse had caused them great distress. Instead of rebuking them he comforted them, urging them not to grieve or be angry with themselves for selling him. God, not they, had sent him ahead to preserve life and to preserve a posterity in the earth by a great deliverance, overruling their cruelty to that end.
In the message Joseph declares that God had made him lord and ruler over all Egypt. That charge set him over Pharaoh's house and land as well as over Egypt itself. He therefore sends his brothers in haste to hurry back to Jacob and bring him down to himself in Egypt without delay. The brothers, including Benjamin, are to stand as eyewitnesses to Jacob that Joseph himself is speaking and to report all his standing and glory in Egypt.
Jacob is invited to come with his children and grandchildren, his flocks and herds, and all he possesses, to dwell in Goshen near Joseph. The urgency belongs to the famine, with two years already past and five years still to come in which there will be neither plowing nor harvest. Joseph himself will provide for and nourish Jacob and his household through those remaining years, so they do not come to poverty.