Those who have been selected from a group of people generally feel good. He often (unconsciously) associates this with being better than others.

Being chosen is a goal that lies in many people. If they are chosen, then they have achieved this aim and they usually experience pleasant feelings that can also flood them.

These feelings will subside in this regard, but can more or less occur here and there again.

It becomes much more difficult when someone feels chosen by an almighty authority, such as God. Clarity and a shutdown of feelings are hardly possible here, because it is about a fantasy. Often this does not go away; a constant fire burns or smoldering in people. They often hover in higher spheres triggered by the brain.
It is almost impossible to dissuade these people from the outside from this belief, and even more difficult from the inside, that is, from themselves. Religious delusion can hardly be cured. The reason is the goal, which has been achieved and now fades out criticism or counter-evidence via the midpoint mechanics with everything that is possible.

Examples of where such a delusion can lead can be read in the book by psychologist Jan Ilhan Kizilhan and author Alexandra Cavelius: The Psychology of IS: The Logic of the Mass Murderer.

Sometimes this "chosen one" is supported in his belief by other people if they think he is accomplishing goals that are within them.

When people are born, they want to be the center of attention, to be preferred to others. You can see that on every baby. If it doesn't get attention, it screams for security, warmth, appreciation, etc.

This longing for recognition (even among siblings, for example) often persists in adulthood. And this can be one of the main reasons why adults like to believe that they are chosen and then adopt the appropriate attitude.

By the way: Love also fulfills this goal.

 
The overwhelming feeling of being chosen can also be seen very well in the winners of a competition.