A worm, a gnat, a fly, a hair, a seed of a raison, a skin of a
grape
Re: A Cabinet of Jewels, Chapters one and two
That golden devil
(Thomas Brooks, "A 
Cabinet of Choice Jewels" 1669)
"Covetousness, which is idolatry." Colossians 3:5
Judas' life was as fair and as free
from spots and blots as 
the lives of any of the apostles; no scandalous sin was to 
be found upon him. But that golden devil
'covetousness' 
was his sin--and his everlasting ruin. His apostleship, 
preaching, working of miracles, hearing of Christ, and 
conversing with Him, etc., was to no purpose, because 
of that serpent he kept in his bosom--which at last 
stung him to death! 
"People who want to get rich fall into temptation and
 a trap and into many foolish and harmful desires that
 plunge men into ruin and destruction. For the love of
 money is a root of all kinds of evil. Some people, eager
 for money, have wandered from the faith and pierced
 themselves with many griefs." 1 Timothy 6:9-10