Genesis 48:15-16

"And he blessed Joseph, and said, The God before whom my fathers Abraham and Isaac did walk, the God who hath fed me all my life long unto this day, the angel who hath redeemed me from all evil, bless the lads; and let my name be named on them, and the name of my fathers Abraham and Isaac; and let them grow into a multitude in the midst of the earth."

At this point Jacob began blessing, but in these two verses he had not yet come to the part of it that made any distinction between the sons of Joseph.

"He blessed Joseph ..." Actually, Joseph was being blessed in the persons of his sons, as indicated by "bless the lads" in Genesis 48:16.

One of the great things of significance in these verses is the triple designation of God, who is extolled as, "Deum Patrem, Deum Pastorem, and Angelum."[10] This means God of My Fathers, Shepherd God, and Angel of Jehovah. There are many names of God in the Bible; and, as always, the name chosen signified not some special "source" but some special significance. Habakkuk 1:12 also uses three names for God in a single verse! The Angel mentioned here is the Angel of Jehovah, identified with God Himself in the prophecies. Looking back over his life, Jacob was conscious of the guiding hand of God.