Option 1 (Gradient Circle with Flame) is the strongest choice because:
- Perfect symbolism: The flame represents being "called out" by God - it connects to prophetic fire, the Holy Spirit, and Kingdom purpose
- Already established: The circular gradient badge is already used throughout your UI, so it feels familiar
- Versatile: Works at any size (favicon, mobile app icon, large hero)
- Matches Prophetic Hub: Aligns perfectly with your "Turn the World Upside Down" and harvest wheat themes
The other options are strong too, but Option 1 has the best combination of meaning, versatility, and brand cohesion.