In Genesis 42:38, Jacob explicitly states he will not send Benjamin, fearing harm — directly reinforcing the reason given here.

Genesis 35:16-19 records Rachel's death in childbirth — this explains why Jacob kept Benjamin home, as Rachel's only other son was Joseph.

In Genesis 43:14, Jacob finally consents to send Benjamin, showing his earlier refusal here was overcome by the famine's pressure.

In Genesis 44:20-22, Judah recounts Jacob’s fear for Benjamin, the same reason Benjamin was kept home in 42:4.

In Genesis 44:27-34, Judah pleads for Benjamin, echoing Jacob’s attachment and the risk of losing him that kept him home.

Genesis 35:18 records Rachel naming Benjamin 'son of my sorrow', explaining why Jacob treasured him as the only surviving son of Rachel.