We have an enemy of our soul who seeks to steal, kill and destroy everything that Jesus died for us to have. We must know who he is and remain sober and vigilant.
If that sickness, disease, or infirmity is not the will of God, it has no legal power, dominion, or control to stay in your life. Matter of fact, anything that is in your life that is not the will of God has NO POWER to remain. The enemy and anything he sends has no power in us or over us EXCEPT what we give it or him.