Genesis 37:2-3

37:2 This is the account of Jacob.

Joseph, his seventeen-year-old son, was taking care of the flocks with his brothers. Now he was a youngster working with the sons of Bilhah and Zilpah, his father’s wives. Joseph brought back a bad report about them to their father.

37:3 Now Israel loved Joseph more than all his sons because he was a son born to him late in life, and he made a special tunic for him.