Therefore, confess your sins to one another and pray for one another, that you may be healed.  The fervent prayer of a righteous person is very powerful.  Elijah was a human being like us; yet he prayed earnestly that it might not rain, and for three years and six months it did not rain upon the land.  Then he prayed again, and the sky gave rain and the earth produced its fruits.

James 5:16-18