James 5:16

The two instructions are joined and the order matters. Confess to one another, and pray for one another. James does not offer the second without the first.

That is an uncomfortable arrangement, and it is deliberate. Praying for someone whose situation you do not really know is a manageable, dignified activity. Confessing to them first is not. James makes the harder thing the precondition of the easier one, and he attaches healing to the pair rather than to the prayer alone.

And it is to one another, not to a designated official. The traffic runs both ways, which means everyone in the arrangement is both the one confessing and the one praying. Nobody stays in the clean role.

Then the claim: the insistent prayer of a righteous person is powerfully effective. Insistent covers a word that has been translated many ways — energetic, fervent, at work. Whatever the precise sense, it is not a description of a single polite request.

And James immediately names his example, which is the surprising part. Elijah — and he does not present him as an exceptional figure. He says Elijah was a man with a nature like ours. That is the whole point of citing him: the prophet who called down fire is introduced as evidence about ordinary people, not as an exception to them.