We expect God to heal our sicknesses today, because all sickness is the (direct or indirect) result of Satan’s work (when he introduced sin into this world) and Jesus was manifested to destroy the works of the devil.
Acts 10: 38 proves to us conclusively that all the diseases Christ cured while on earth had been caused by Satan. Acts 10: 38, “God anointed Jesus of Nazareth with the Holy Ghost and with power: who went about doing good, and healing all who were oppressed of the devil; for God was with Him.”
The word here for “oppressed” is “katadunasteuomenous,” the present participle, passive of “katadunasteuo”—I dominate or exercise lordship over.”
Then all whom Christ healed while on earth were diseased or afflicted because Satan had gotten the lordship, either over them, or their ancestors. Yes, every physical ill Christ cured was the result of Satan’s work.
But Jesus came, died on the cross, and rose again that He might destroy the work of the Devil.
Hebrews 2:14, “Forasmuch then as the children are partakers of flesh and blood. He also Himself likewise took part of the same; that through death He might destroy him that had the power of death, that is the Devil.” Then Christ died to destroy Satan’s power over death. Is not sickness one method by which Satan causes death? Then Christ died to destroy (annul the power of) sickness.”
John reveals this same truth in 1 John 3:8, “For this purpose the Son of God was manifested, that He might destroy the works of the Devil.” Is sickness the result of the Devil’s work? Yes! Then Christ died and rose again to destroy (annul the power of) sickness.
As adapted from the work of… T. J. McCrossan, B.A., B.D.