Interestingly, the verses immediately before and after this are nearly identical.
The prophet hearing G*d's voice didn't change any of the actual facts of what had happened. The covenant had been forsaken, the prophets had been slain, and Elijah himself was still alone and vulnerable.
All that has changed was the meaning attached to these events, and the context in which he placed them. Elijah was now clear that the might of his enemies -- the wind, noise and fire -- will not prevail. But his own "still, small voice" will suffice to bring hope to the next generation.