Below are two very important paragraphs. I say this because these MIGHT be the only two paragraphs which make this specific point in the whole course.
A teacher of God is someone who is still in the dream, in a body, thus USING the body's eyes, while ALSO having a highly developed spiritual eye/christ vision.
They do not have 100% christ vision ONLY, because if they did the veil of spacetime would lift entirely and they would no longer see the world at all. You cannot see the real world ONLY if you are invested in still seeing the illusory world at least a little. "You cannot see both worlds" FULLY. But you CAN see both worlds PARTLY.
JUST PRIOR to that state of perfect perception, you utilize TWO ways of perceiving, IN PARALLEL (overlaid). This allows you to see the illusory world of bodies, sickness, war and death, BUT in such a way through alignment with the spiritual eye that all of these things register to your mind as FALSE, UNREAL, NOT TRUE.
You can see them, BUT NOT BELIEVE THEM. This allows you to see a call for love, see the sick and dying, see the suffering, BUT be in a position to provide miracles to help those in need because you are NOT DECEIVED by what you see.
Your mind RECOGNIZES illusions are illusions - that the illusory world is not true. But you DO still see it, until the veil lifts completely. This puts you in a unique position to be a Teacher of God, a miracle worker, who CAN HELP OTHERS whom you SEE as in need of help, WITHOUT your mind being deceived.
This overthrows the idea that "if you see it its yours" because it recognizes that we have access to TWO TYPES OF EYES - the body's eyes and the spiritual eye. And we use BOTH of them at once, until true perception is perfected. A kind of double vision. Which means you can still see things which ARE NOT yours, without barely any belief in them, just enough to be truly helpful.
"God's teachers choose to look on dreams a while. It is a conscious choice.For they have learned that all choices are made consciously, with full awareness of their consequences.The dream says otherwise, but who would put his faith in dreams once they are recognized for what they are?Awareness of dreaming is the real function of God's teachers. They watch the dream figures come and go, shift and change, suffer and die.Yet they are not deceived by what they see. They recognize that to behold a dream figure as sick and separate is no more real than to regard it as healthy and beautiful. Unity alone is not a thing of dreams. And it is this God's teachers acknowledge as behind the dream, beyond all seeming and yet surely theirs."
"M-8.6. The body’s eyes will continue to see differences. 2 But the mind that has let itself be healed will no longer acknowledge them. 3 There will be those who seem to be “sicker” than others, and the body’s eyes will report their changed appearances as before. 4 But the healed mind will put them all in one category; they are unreal. 5 This is the gift of its Teacher; the understanding that only two categories are meaningful in sorting out the messages the mind receives from what appears to be the outside world. 6 And of these two, but one is real. 7 Just as reality is wholly real, apart from size and shape and time and place—for differences cannot exist within it—so too are illusions without distinctions. 8 The one answer to sickness of any kind is healing. 9 The one answer to all illusions is truth."