Does the Bible answer Cain's question, Am I my brother's keeper?

God asks where Abel is. Cain gives a denial and then a question. In context the question is not moral reflection. It is a way of refusing responsibility for a man he has killed, and Scripture never treats it as a legitimate answer.

Notice that God does not debate the question. He replies with a different one: what have you done. The evasion is set aside and the deed is named.

Leviticus 19:17-18 forbids hating a brother in the heart and commands loving a neighbour as oneself, which places responsibility for a brother inside the law itself.

Deuteronomy 15:7-11 forbids a hard heart and a closed hand toward a brother in need, and commands an open hand instead. Proverbs 24:11-12 removes the defence of claiming not to know when someone is perishing, which is exactly the defence Cain attempts.

Jesus is asked a version of the same question in Luke 10:29 and answers with a story in which a man crosses a road, spends his own money and arranges further care. The parable makes neighbour a verb.

James 2:14-17 says a faith that sends a brother away without food or clothing is dead, and 1 John 3:17 asks how God's love can remain in someone who closes his heart against a brother in need.

Scripture does not answer Cain's question by making every person responsible for everything. Galatians 6:5 still says each will bear his own load, and the same chapter says to bear one another's burdens (Galatians 6:2). Responsibility for a brother does not remove a brother's own responsibility.

Nor does the answer reduce to feeling. Every passage above turns on something done: an open hand, a bandage, a payment, food, clothing, words spoken to a brother rather than about him.