"We should hold convocations for prayer, asking the Lord to open the way for the truth to enter the strongholds where Satan has set up his throne, and dispel the shadow he has cast athwart the pathway of those whom he is seeking to deceive and destroy. We have the assurance: “The effectual fervent prayer of a righteous man availeth much.” James 5:16 . 6T 80.4"
"Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much."
Ellen White directly references James 5:16 in this passage.