“… and the prayer of faith will save the sick man, and the Lord will raise him up; and if he has committed sins, he will be forgiven. Therefore confess your sins to one another, and pray for one another, that you may be healed. The prayer of a righteous man has great power in its effects.” (James 5:15-16)
“It is a fundamental Christian belief that suffering and sickness are the consequence of sin. The creation narrative in Genesis makes it clear that humanity was created to dwell in paradise, in the company of God, where, in the words of the funeral kontakion, there is no ‘sickness and sorrow.’ …. Sickness, suffering, and death, therefore, are not normal. Humanity was created not for suffering and death, but for eternal life in communion with God.
As a result of human sin, however, this communion has been broken; and the physical consequences of this break are sickness and death, because apart from God there can be no life, but only death. … The inescapable conclusion is that we all sin, we all suffer, and we all die. … Epidemics, disease, strife, suffering – all remain despite the remarkable progress in technology, science, and medicine.” (Paul Meyendorff, THE ANOINTING OF THE SICK, pp 64-65)