Midrasz do Rodzaju 37:2

And Jacob sat in the land (Gen. 37:1). Whenever Scripture uses the expression and he sat (also translated “and he dwelt”), it connotes misfortune: And Israel sat in the land of Egypt, in the land of Goshen, … and the time drew near that Israel must die (Gen. 47:29); And the people sat down to eat and drink, and rose up to make merry (Exod. 32:37); And there fell of the people on that day three thousand men (Exod. 38:28); And they sat down to eat bread; and they lifted up their eyes and looked, and, behold, a caravan of Ishmaelites (Gen. 37:25); And Judah and Israel sat safely (I Kings 5:5); And the Lord raised up an adversary against Solomon (ibid. 11:14); And Israel sat among the cedars, etc., and the people began to commit harlotry (Num. 25:1). You may explain every other use of “and he sat” with this negative implication. In this instance And Jacob sat is followed by and Joseph brought evil report of them unto his father (Gen. 37:2).

Another comment on These are the generations of Jacob. Joseph, etc. (Gen. 37:2). Was not Reuben actually the firstborn? He was, but since he defiled his father’s couch (I Chron. 5:1), his birthright was given to the descendants of Joseph, the descendants of Israel. However, they are not actually accounted as the firstborn in the genealogy of the people. Another explanation. These are the generations of Jacob. Joseph. You find that Joseph resembled his father in every way, and that everything that happened to Jacob also happened to Joseph. Jacob’s brother was envious of him, and Joseph’s brothers were envious of him; Jacob was exiled to Haran, and Joseph was exiled to Egypt; Jacob said: Whether stolen by day or stolen by night (Gen. 31:39), and Joseph said: For indeed, I was stolen away (ibid. 40:15).

And Joseph was seventeen years old, and he still continued to regard himself above his ‎brothers and to exalt himself above them. And at that time Joseph dreamed a dream, and he ‎came unto his brothers to tell them of his dream, and he said unto them: I dreamed a dream, ‎and behold, we were binding sheaves in the field, and lo, my sheaf arose and also stood ‎upright, and behold your sheaves stood round about and made obeisance to my sheaf. And ‎his brothers said unto him: What is the meaning of this dream that thou didst dream? Dost ‎thou think in thine heart to govern and to rule over us. And Joseph came also unto his father ‎informing him of his dream, and Jacob heard the words of his mouth and he kissed him and ‎Jacob blessed Joseph. And when the sons of Jacob saw that their father had kissed and ‎blessed Joseph and that he loved him so dearly, they became jealous of him and they hated ‎him still more. And afterwards Joseph dreamed another dream and he related it unto his ‎father in the presence of his brothers, and he said unto his father and brothers: Behold, I have ‎dreamed another dream, and lo, the sun, and the moon, and eleven stars bowed down ‎before me. And Jacob heard the words of Joseph and his dream, and he saw that his brothers ‎hated Joseph on account of these words, and Jacob rebuked Joseph in the presence of his ‎brothers, saying: What is the meaning of this dream which thou hast dreamed that thou ‎exaltest thyself over thy brothers who are greater than thou. Thinkest thou perhaps in thine ‎heart that we will come, I and thy mother and thy eleven brothers to bow down before thee, ‎that thou speakest these words. And his brothers were jealous of him concerning his words ‎and dreams and their hatred against him increased. And Jacob observed and kept the dreams ‎within his heart.‎