Hammers and Anvil

I paused last eve beside the blacksmith's door,
And heard the anvil ring, the vesper's chime,
And looking in I saw upon the floor
Old hammers, worn with beating years of time.
"How many anvils have you had?" said I,
"To wear and batter all these hammers so?"
"Just one," he answered. Then with twinkling eye:
"The anvil wears the happers out, you know."
And so, I thought, the anvil of God's Word
For ages skeptic' blows have beat upon
But thought the noise of falling blows was heard
The anvil is unchanged: the hammers gone.