Dreams often reflect our subconscious thoughts, emotions, and experiences. In your dream, the house resembling your aunt and uncle's old home could symbolize a connection to your past or family ties. The massive dark cathedral dome might represent feelings of being overwhelmed or a sense of grandeur that is intimidating. This setting could indicate a search for safety or comfort amidst chaos, especially since you mentioned the presence of a demon and the threat of robbery.

The haunting demon could symbolize fears or anxieties you are facing in your waking life, perhaps related to feelings of vulnerability or loss of control. The alternating threat between a demon and a robbery may signify the unpredictability of challenges you feel you are encountering. Surviving through the nights suggests resilience and the ability to navigate difficult situations.

The transition to the dream where you tell your brother you are from the future could indicate a desire to share wisdom or insights gained from your experiences. The act of warning him might suggest a protective instinct or concern for his well-being. The loud thunder strike serves as a powerful punctuation to this moment, symbolizing a wake-up call or realization.

Overall, these dreams might be urging you to confront underlying fears, to seek support from loved ones, and to trust in your ability to navigate life's uncertainties. Consider reflecting on any current challenges you may be facing and how you might communicate your insights or concerns to those close to you.