Two brothers.

Cain — the older. A farmer.

Abel — the younger. A shepherd.

Both bring an offering to God. Cain brings fruit from the ground he worked. Abel brings the firstborn of his flock.

God accepts Abel's. Not Cain's.

The text doesn't explain why.

Cain's face falls.

The voice of God speaks to him — gently.

"Why are you angry? Why is your face fallen? If you do well, you will be lifted up. If you do not, sin is crouching at the door. It wants you. But you must rule over it."

Cain says nothing.

Then he speaks to his brother.

"Let's go out to the field."

Out in the field, alone, he kills him.

The first murder in the Bible.

The voice of God comes back to Cain.

"Where is your brother Abel?"

Cain answers with a line that has outlasted civilizations.

"I do not know. Am I my brother's keeper?"

And the voice answers — and this is the line that matters.

"What have you done? The voice of your brother's blood is crying out to me from the ground."

Abel was the younger brother. A shepherd. A nobody by every measure of the time.

And his blood cried out — and was heard.

That is the moment in the Bible where the value of a human life stops depending on power.

And starts depending on something else.