Bg 9.12

moghasa mogha-karmano
mogha-jnana vicetasah
raksasim asurim caiva
prakrtim mohinim sritah

Word for word: 
mogha-asah — baffled in their hopes; mogha-karmanah — baffled in fruitive activities; mogha-jnanah — baffled in knowledge; vicetasah — bewildered; raksasim — demonic; asurim — atheistic; ca — and; eva — certainly; prakrtim — nature; mohinim — bewildering; sritah — taking shelter of.

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Those who are thus bewildered are attracted by demonic and atheistic views. In that deluded condition, their hopes for liberation, their fruitive activities, and their culture of knowledge are all defeated.

Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
There are many devotees who assume themselves to be in Krishna consciousness and devotional service but at heart do not accept the Supreme Personality of Godhead, Krishna, as the Absolute Truth. For them, the fruit of devotional service – going back to Godhead – will never be tasted. Similarly, those who are engaged in fruitive pious activities and who are ultimately hoping to be liberated from this material entanglement will never be successful either, because they deride the Supreme Personality of Godhead, Krishna. In other words, persons who mock Krishna are to be understood to be demonic or atheistic. As described in the Seventh Chapter of Bhagavad-gita, such demonic miscreants never surrender to Krishna. Therefore their mental speculations to arrive at the Absolute Truth bring them to the false conclusion that the ordinary living entity and Krishna are one and the same. With such a false conviction, they think that the body of any human being is now simply covered by material nature and that as soon as one is liberated from this material body there is no difference between God and himself. This attempt to become one with Krishna will be baffled because of delusion. Such atheistic and demoniac cultivation of spiritual knowledge is always futile. That is the indication of this verse. For such persons, cultivation of the knowledge in the Vedic literature, like the Vedanta-sutra and the Upanisads, is always baffled.

It is a great offense, therefore, to consider Krishna, the Supreme Personality of Godhead, to be an ordinary man. Those who do so are certainly deluded because they cannot understand the eternal form of Krishna. The Brhad-visnu-smrti clearly states:

yo vetti bhautikam deham
Krishnasya paramatmanah
sa sarvasmad bahis-karyah
srauta-smarta-vidhanatah
mukham tasyavalokyapi
sa-celam snanam acaret

“One who considers the body of Krishna to be material should be driven out from all rituals and activities of the sruti and the smrti. And if one by chance sees his face, one should at once take bath in the Ganges to rid himself of infection.” People jeer at Krishna because they are envious of the Supreme Personality of Godhead. Their destiny is certainly to take birth after birth in the species of atheistic and demoniac life. Perpetually, their real knowledge will remain under delusion, and gradually they will regress to the darkest region of creation.