BG Chap 15 - Not everyone understands what is happening with the soul
The foolish do not understand how and when the soul is leaving the body, residing in it or enjoying the sense objects. Those whose eyes are trained in knowledge can see all this. The person with no discrimination does not realize the jīva, though he is capable of realizing it, since it is situated in his body. Though the ātmā leaves the body, or is situated in the body, and being situated there, enjoys objects, engaging with the senses to experience happiness, distress and illusion, the fools do not realize that ātmā. They are blinded by unending attempts to enjoy their senses. Because they identify with the happiness and distress arising from the senses, they remain unable to distinguish matter from spirit. Those with eyes accustomed to discriminating knowledge realize that the ātmā is separate from the body and senses. Endeavoring yogīs, who undertake processes like hearing, see the soul situated in the body. Others, though they may endeavor, cannot see the soul because of having impure heart.