Question: When is a bird bigger than a mountain? Answer: When the bird is closer than the mountain.
In reality, the bird is not bigger than the mountain, but it sure looks that way when the feathery fellow is perched on my window ledge and the mountain is far away in the distance.
Sometimes we perceive God this way in relationship to our problems. The troubles facing us seem huge because they are so closelike a big black bird with beady eyes and a sharp beak waiting for a smaller animals weariness to turn into helplessness so it can devour it. At such times, God seems as far away as a distant mountain, and we perceive Him as being small and unreachable.
The prophet Isaiah changes our perspective by asking these rhetorical questions: Who has measured the waters in the hollow of His hand, measured heaven with a span and calculated the dust of the earth in a measure? Weighed the mountains in scales and the hills in a balance? (40:12). The Lord gives power to the weak, and to those who have no might He increases strength (v.29).
Just as a bird is never bigger than a mountain, no problem is ever bigger than God. Its all a matter of changing our perspective.