The most hidden, secret, and deceitful of all lusts

(Jonathan Edwards, "Directions How to Conduct Yourself
in Your Christian Course"--A letter addressed to a young
 lady in the year 1741)

"To fear the Lord is to hate evil. I hate arrogant pride,
 evil conduct, and perverse speech." (Proverbs 8:13)

Remember that pride is the worst viper that is in
the heart, the greatest disturber of the souls peace,
and of sweet communion with Christ. Pride . . .
  was the first sin committed,
  lies lowest in the foundation of Satan's whole building,
  and is with the greatest difficulty rooted out.

Pride is the most hidden, secret, and deceitful of all
lusts--and often creeps insensibly into the midst of religion,
even, sometimes, under the disguise of humility itself!