Souls and its arrival in this wild world of flesh, known as the "World of Lies". Why is it called that? Because everything in this material plane is actually a lie. People can lie, for no one knows what is in another person's heart. Each person carries the secrets of his inner faults and failing, putting on appearances so that no one should discover those secrets. G-d, knows our innermost heart and thoughts, and all of our actions!  There is no lying to G-d!  Know and follow the truth.