@nihalmaz -- Thank you for your questions!

Per the contest description, the article should not be fictional.

• Does the entry strictly have to be about incidents that happened in the person's life?

The contest guidelines are to help shape the theme, but not mandate the subject matter. If you feel the author or someone they know was affected emotionally or otherwise by the subject of their submission, then this meets this standard and you may accept it as qualified.

• Or can it be about their thoughts and visions, their philosophies in life etc?

Yes, if this is something that has influence or effected them, it is about them.

• should articles that emphasize on divine interventions or influence in life have a place in the list?

Again, if these occurrences or interventions have been a factor in their life or someone they know, it more than qualifies.