The SIGN of FAITH
Mark 16:17
And these signs shall follow those that believe:
-in my name they will cast out demons
-they will speak new tongues
-they will pick up serpents with their hands.
- if they drink any deadly poison, it will not hurt them
-they will lay their hands on the sick , they will recover.

The above statement by implications means faith's size, level and intensity can be indirectly determine by the manifestation of above events. The above listed events shows "faith people control events from both spirit and physical realms.