I was a child of the flame
and often did I kill and maim,
Against God's chosen people fought,
destruction to my owner brought.
I spent some years among the priests
and there no doubt was used the least.
I joined a fugitive to flee,
A man some people called crazy.
Thus God I finally did slave for,
though use for me he has no more.
I was a giant in my time
but surely things will be just fine
if I should surface never more
as moth and rust such things rule o'er.
What am I?
Write to me if you need help.