What was the relationship between Jacob and Benjamin?
Benjamin was Jacob’s youngest son. After losing Joseph, Jacob did not want to be separated from him. Genesis 35:18; Genesis 42:4, 38
What the Bible says
Genesis 42:4
Whilst Benjamin was kept at home by Jacob, who said to his brethren: Lest perhaps he take any harm in the journey.
Genesis 42:38
But he said: My son shall not go down with you: his brother is dead, and he is left alone: if any mischief befall him in the land to which you go, you will bring down my gray hairs with sorrow to hell.
Douay-Rheims Bible (Challoner revision), public domain.