Sickness is an attempt to redefine God as less than whole; suffering, and preparing to die.
What we give reality to, or see truth in, becomes our perceived reality. If we believe that sickness is real, we will in some way experience sickness, because we put it there.
If sickness is real, it cannot be healed. Having given reality to it, it has been established with a sense of permanence and held in suspension.
To attempt to heal that which is real, is nonsense. Reality needs no healing. To attempt to heal a real sickness is nonsense. While the belief in sickness remains active, it is actively producing more sickness.
Those who are sick would like to enjoy health. But they do not have this option. They are fixed in sickness, because they believe the world is real. If the world is real, and they have ambition to go from "real sickness" to "real health", it will not work. A healthy body and a sick body are both illusions, and the experience of sickness as real maintains it.
The only way that sickness can be cured is by recognizing sickness is not reality. Giving it no truth, and giving it TO the truth.
One the one hand we may be saying, I want to not be sick, or I want that person to not be sick. But at the same time, we are saying this because we are experiencing "real sickness" and do not like it. Who would enjoy being "really sick"? If sickness were real, we would seem to "really suffer".
Divine health focuses entirely on God's truth and life. It has no room for even a thought of sickness or separation.
Forgiveness overlooks sickness and error from the start.
"The ego's plan is to have you see error clearly first, and then overlook it. Yet how can you overlook what you have made real?" - ACIM
"Your brother's errors are not of him, any more than yours are of you. Accept his errors as real, and you have attacked yourself." - ACIM
"You have been told not to make error real, and the way to do this is very simple. If you want to believe in error, you would have to make it real because it is not true. But truth is real in its own right, and to believe in truth you do not have to do anything." - ACIM
"Forgiveness through the Holy Spirit lies simply in looking beyond error from the beginning, and thus keeping it unreal for you. Do not let any belief in its realness enter your mind." - ACIM
Here Jesus has told us that forgiveness overlooks error from the very beginning, because forgiveness is FORE-giveness. It gives truth ahead of time so that it does not PRODUCE errors. Error (judgement) enters in as a FAILURE to be fore-giving - an error in forgiveness ("he who would not forgive must judge").
A form of error is SICKNESS. To overlook sickness we must learn not to make sickness real, which is making the error real.
Therefore to heal sickness, we must withdraw all sense that the error/sickness is REAL, to begin with, otherwise we will be fighting against our own decision to believe in the sickness, and will be in conflict with ourselves. Likely we will wage war against the sickness like it is an enemy, which will only mean that we're waging war against our own desire to keep sickness a reality.
We need to be single minded. One minded. Whole minded. One focus on perfect health and truth, with no room for producing error, and therefore no room for believing that sickness (error) can be in any way real.
When you see or experience sickness, you are in error. You believe the sickness is really happening. You believe you are experiencing it. You are choosing it, and adding to it. You must unbelieve it.
There IS no real sickness!
There IS no real death!
There IS no real sin!
God's truth is the only truth.