What does Unity teach about sin and salvation, heaven and hell?

Sin is our separation from God, the Good, in consciousness. Salvation is in the moment; it is not something that happens after death of the body. It occurs whenever we transform our thoughts, opinions, and views from fear, anxiety, worry, and doubt into feelings and beliefs of love, harmony, joy, and peace. The “fall” takes place in consciousness whenever we collapse into negative habits of thinking. Heaven and hell are states of consciousness, not geographic sites - thus, we create our own heaven or hell in this place, in this world, by our thoughts, words, and deeds.