Quote from A Course in Miracles Text Chapter 13 - THE GUILTLESS WORLD.

T-13.VIII.1. All healing is release from the past. 2 That is why the Holy Spirit is the only Healer. 3 He teaches that the past does not exist, a fact which belongs to the sphere of knowledge, and which therefore no one in the world can know. 4 It would indeed be impossible to be in the world with this knowledge. 5 For the mind that knows this unequivocally knows also it dwells in eternity, and utilizes no perception at all. 6 It therefore does not consider where it is, because the concept "where" does not mean anything to it. 7 It knows that it is everywhere, just as it has everything, and forever.