"For we are not as many, which corrupt the word of God: but as of sincerity, but as of God, in the sight of God speak we in Christ."
- 2Corinthians 2:17(KJV)
[b]Corrupt[/b](from Strong's Greek Dictionary)
G2585
καπηλεύω
kapēleuō
kap-ale-yoo'-o
From κάπηλος kapēlos (a huckster); to retail, that is, (by implication) to adulterate (figuratively): - corrupt.
The following is a portion of the entry for this passage in Vincent's Word Studies. Then entry deals with the use of the greek word above specifically:
"...The moral application of the term was familiar in classical Greek. Lucian says: “The philosophers deal out their instructions like hucksters.” Plato: “Those who carry about the wares of knowledge, and make the round of the cities, and sell or retail them to any customer who is in want of them, praise them all alike; though I should not wonder if many of them were really ignorant of their effect upon the soul; and their customers equally ignorant, unless he who buys of them happens to be a physician of the soul” (“Protagoras,” 313). Paul here uses the term of those who trade in the word of God, adulterating it for the purpose of gain or popularity. Compare 1Ti_6:5, Rev. In the “Teaching of the Twelve Apostles” occurs the word χριστέμπορος a Christ-monger (ch. xii., 5)."