Jesus Christ’s sacrificial death and resurrection was for the redemption of human being, body, soul & spirit, whoever accept Christ by faith will inherit this redemption. Redemption of our body will be received at the resurrection.
But in this life there is physical infirmities and diseases, it will continue, up to our death or up to our Saviour’s appearance at the mid-air. God will heal us because of our prayers, healing is not only for believers but unbelievers also receive it. Jesus Christ’s earthly ministry, mostly he healed the unbelievers.
Christ’s sacrifice is not for our present life physical healing, as the faith-healers claim.
Sin is the worst disease, which has no cure by human beings, penalty of sin is paid by our Saviour’ sacrificial death and the blood of Christ cleanses us from all our sins.
1Jn 1:7 But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.
Quote of others”
“Sin is a disease, a natural and hereditary one, an epidemic distemper, that reaches to all men, and to all the powers and faculties of their souls, and members of their bodies; and which is nauseous and loathsome, and in itself mortal and incurable; nor can it be healed by any creature, or anything that a creature can do. Christ is the only physician, and his blood the balm and sovereign medicine; this cleanses from all sin; through it is the remission of sin, which is meant by healing; for healing of diseases, and forgiving iniquities, is one and the same thing; see Psa_103:3 on which latter text a learned Jew (i) has this note,”