I will not be explaining exactly what is soul, body and spirit. For simplicity, let us say that we all realize that we have a body and a mind, and that one is not the other.
The body appears to us first as a physical presence and as our slave: we see our hand and move it where we want, as well as everything else. It also presents needs for our minds: hunger, sleep, pain and so on.
On the other hand, we are aware of our own mind (that term, mind, more strictly speaking, should be soul) and realize that it is not our body. We also realize that there are things that the mind witnesses that are internal to us and that other people can not know, unless indirectly, if we communicate what is happening within us.
Well, the mind (soul) has passions, desires: we want to eat delicious things even if we are not hungry, we want to have sex, we want to be rich, we want to be powerful, be admired etc. Also some - maybe very few who are reading this - are interested in the seach for knowledge, good, truth, harmony, literature etc. There is, therefore, a difference in the two types of passions that our souls have: passions that are not properly mental as such, because to be satisfied they need use material things; and the passions proper to the mind, which do not refer to and use physical means to do so.
After this brief explanation, I say: you will die, but your conciousness will continue to exist.
Your consciousness is not in the brain and this is a fact philosophically proved by Plato and Aristotle, and even modern medicine already accumulates millions of reports of people declared clinycally dead who continued to have sensitive perceptions while in that state and who, upon being resurrected, narrated what they saw. Narratives come to the degree of detail, for example, a woman who saw that a nurse wore socks of different colors.
And what will happen after death? You will continue to have passions, but you will not possess the material means of satisfying them. And if you did not prepare for it, my son, do you know what will happen? First, you will feel hopeless, because you will sense the whole fucking thing. Then you will be afraid. And at last you will feel anger.
These are appetites that all animals as such possess: hope (to overcome an obstacle), audacity (of moving toward the obstacle to overcome it) and calm (because the need is satisfied); desperation (to overcome an obstacle, like a lion guarding a lake in the desert), fear (and consequently escape from what we feel to be dangerous) and anger (when you can not run, anger is the last resort to try to survive).
Now, imagine that you do not prepare your souls for it, that is, to turn to spiritual good, since it will be impossible to satisfy material desires. You will go through all this process: hopelessness, fear and anger. And these desires, by not being satisfied, will only increase, and hatred will also increase proportionately. Imagine this throughout the continuity of your existences. You've already felt anger, right? Have you ever felt that burning and blood bubbling? Well, that's a physical side effect, but we know how that goes in our soul too. This is the infernal state, and, one hour, that fire will be so great that it will illuminate the black where you are, and will show you the beautiful place in which they are.
That's what it's all about, in my opinion, what religion is for. It's not meant to be "freshness". It is not to be "Oh my Jesus", "God is love", "gratitude", "oh yeah Jesus" and neither is it with nonsense devotions. It's for this: YOU ARE DYING AND YOU HAVE TO PREPARE YOUR SOULS TO SATISFY THE PASSIONS OF HER AS WELL. The sacraments (which are not sacrilegious) and commandments of the Church, fasting, prayer and alms are for that.