It's never God's will for people to be sick and die from illness, disease, or sickness. He provided Jesus as an atonement for all sin including those ailments. Jesus took all of it on Himself, so we wouldn't need to take it on ourselves.
Yet, some of us have really not understood all that He died to give us on the cross over 2000 years ago. He paid the ultimate penalty for us. It's not just partially paid for by Him either. It's all paid for us. Therefore, it was all taken care of us.
We don't have to receive anything that the devil tries to put on us. He put the devil under His feet. The devil is also under our feet as blood-bought Children of God.
Jesus is in us, and we are in Him. So, the devil is a defeated foe. Don't believe any of his lies.
There is now no condemnation for those who are in Christ Jesus. Cast down all of those imaginations against the knowledge of Jesus Christ. Receive all that Jesus died to give you. Forgiveness of sins, divine healing and health, wholeness, abundant life, and more. It's all bought for us, so it is truly ours in Christ.