Jacob was walking along with the Lord and be blessed by the Lord

Genesis 49:1-33
Reuben, turbulent as the waters, you will no longer excel, for you went up onto your father's bed .
Simeon and Levi are brothers - their swords are weapons of violence, I will scatter them in Jacob and disperse them in Israel.
Judah your brothers will praise you; Your are a lion's cub, who dares to rouse him? The scepter will not depart from Judah, nor the ruler's staff from between his feet until he comes to whom it belongs and the obedience of the nations is his.
Zebulen will live by the seashore and become a haven for ships;
Issachar is a rawboned donkey lying down between two saddlebags.
Dan will provide justice for his people as one of the bribes of Israel.
I look for your deliverance, O Lord.
Gad will be attacked by a bad of raiders, but he will attack them at their heels.
Asher's food will be rich;
Naphtali is a doe set free that bears beautiful fawns.
Joseph is a fruitful vine, whose branches climb over a wall.
Because of your father's God, who helps you, because of the Almighty, who blesses you with blessings of the heavens above, blessing of the deep that lies below blessings of the breast and womb... Let all these rest on the head of Joseph, on the brow眉 of the prince among his brothers.
Benjamin is a ravenous wolf;
scepter : an ornamented staff carried by rulers on ceremonial occasions as a symbol of sovereignty.
Why?
The outrage recorded in 35:22 costs Reuben his birthright a firstborn son.
Jacob's judgment of Simeon's and Levi's conduct at Shechem is clear. Both tribes will be scattered.
From Judah comes the royal line of Israel, a coming golden age and the Messiah.
Although near enough to acquire wealth from maritime trade, Zenulun's territory did not in face stretch to the sea.
Gad: Such raids are recorded on the 9th-century Moabite Stone.
Jacob's blessings and instructions decided the ways of descendant of Israel 12 tribes. Jacob is walking along with the Lord so he can say above instructions.
How?
Because of the Almighty, who blesses me with blessings of the heavens above. He is the fountain of blessing.