He giveth power to the faint, and to them that have no might He increaseth strength.
Even the youth shall faint and be weary and the young men shall utterly fall;
But they that wait upon the Lord shall renew their strength, they shall mount up with wings as eagles, they shall run and not be weary, they shall walk and not faint.
Isaiah 40:29-31(kjv)

“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”
James 5:16(kjv)