Genesis 49:22

He closes with the blessings of his best beloved sons, Joseph and Benjamin; with these he will breathe his last. I. The blessing of Joseph, which is very large and full. He is compared (Gen 49:22) to a fruitful bouth, or young tree; for God had made him fruitful in the land of his affliction; he owned it. Gen 41:52. His two sons were as branches of a vine, or other spreading plant, running over the wall. Note, God can make those fruitful, great comforts to themselves and others, who have been looked upon as dry and withered. More is recorded in the history concerning Joseph than concerning any other of Jacob's sons; and therefore what Jacob says of him is historical as well as prophetical. Observe, 1. The providences of God concerning Joseph, Gen 49:23, Gen 49:24. These are mentioned to the glory of God, and for the encouragement of Jacob's faith and hope, that God had blessings in store for his seed. Here observe (1.) Joseph's straits and troubles, Gen 49:23. Though he now lived at ease and in honour, Jacob reminds him of the difficulties he had formerly waded through. He had had many enemies, here called archers, being skilful to do mischief, masters of their art of persecution. They hated him: there persecution begins. They shot their poisonous darts at him, and thus they sorely grieved him.

— Matthew Henry's Concise Commentary (public domain)

JOSEPH-- (Gen 49:22-26) a fruitful bough, &c.--denotes the extraordinary increase of that tribe (compare Num 1:33-35; Jos 17:17; Deu 33:17). The patriarch describes him as attacked by envy, revenge, temptation, ingratitude; yet still, by the grace of God, he triumphed over all opposition, so that he became the sustainer of Israel; and then he proceeds to shower blessings of every kind upon the head of this favorite son. The history of the tribes of Ephraim and Manasseh shows how fully these blessings were realized.

— Jamieson-Fausset-Brown Commentary (public domain)