"Your enemy is such things as ye have acquired of your own inclination, to which ye have firmly clung ..."

"O servants! Lifeless is the body that is bereft of a soul, and withered the heart that is devoid of the remembrance of its Lord. Commune with the remembrance of the Friend and shun the enemy. Your enemy is such things as ye have acquired of your own inclination, to which ye have firmly clung, and whereby ye have sullied your souls. The soul hath been created for the remembrance of the Friend; safeguard its purity. The tongue hath been created to bear witness to God; pollute it not with the mention of the wayward."

-Bahá'u'lláh, The Tabernacle of Unity, p. 68