“These are the generations of Jacob. Joseph, being seventeen years old, was feeding the flock with his brethren; and the lad was with the sons of Bilhah, and with the sons of Zilpah, his father's wives: and Joseph brought unto his father their evil report.”
King James Version (KJV)
37:2 These are the generations of Jacob - It is not a barren genealogy, as those of Esau, but a memorable useful history. Joseph brought to his father their evil report - Jacob's sons did that when they were from under his eye, which they durst not have done if they had been at home with him; but Joseph gave his father an account of their ill carriage, that he might reprove and restrain them.