Conclusion

Those who adopt the secret language of evil as a way of life and make it the foundation of their personality will lose more than they have ever imagined. They live every hour trying to perform acts of silent wickedness and trying to hide their methods that they only reveal to satan. This will bring ruin upon them. Increasing pangs of conscience embrace their personalities; their merciless struggle to extinguish these pangs begins to exhaust them. They sedate their brains and try not to think; they want to escape from the fierceness of the silent and destructive battle within them. They spend their lives thoughtlessly, in helpless grief and sorrow.

Their pain-filled life derives from the fact that they abandoned Allah and became the agents of satan. Instead of doing good, they practiced evil. Allah says in the Qur'an that the reason that their lives are full of pain is because they espoused wickedness:

Or do those who perpetrate evil deeds suppose that We will make them like those who believe and do right actions, so that their lives and deaths will be the same? How bad their judgment is! (Surat al-Jathiyya: 21)

But it is in their own hands to lead a good life and escape from these secret pangs. Allah has shown the path to happiness and how to rescue themselves from all these anxieties; He has said this is possible only if they follow the way that He has revealed:

... who follow My guidance will not go astray and will not be miserable. (Surah Ta Ha: 123)

They must become aware of the contradiction in their lives and the harm this causes them. Then they must submit to Allah. To do this, they need only think with sincerity:

Everyone of normal intelligence feels the pressure of his conscience that will do him serious physical and spiritual harm. No matter how healthy he is, he will not be able to endure it for very long. He wonders how long he can endure and realizes that it cannot continue indefinitely. He is alarmed when he realizes that his satanic morality is leading him to a quick death and the pangs of Hell. Every moment he lives will be filled with pains of conscience, anxiety and unhappiness. In the Afterlife, the reward for having made friends with satan will be the eternal fire of Hell and a life of sorrow, pain and sadness.

As soon as an aware individual realizes the extent of the pain to result in the world to come from the kind of morality he practiced in his Earthly life, he will be overwhelmed with fear, take refuge in Allah, and repent of the wickedness he has committed. Otherwise, his wicked deeds may increase, and it may not be possible for him to make up for them.

In the Qur'an, Allah warns people not to meet this end:

On the Day that each self finds the good it did, and the evil it did, present there in front of it, it will wish there were an age between it and then.... (Surah Al 'Imran: 30)

On that day, all the wickedness committed with this silent language will be revealed. Evil that people did in this world, thinking it was secret and would never come to light, will be revealed. Allah says that He will unveil the secret wickedness that people have done through their own bodies:

When they reach it [the Fire], their hearing, sight and skin will testify against them concerning what they did. (Surah Fussilat: 20)

You did not think to shield yourselves from your hearing, sight and skin testifying against you and you thought that Allah would never know much of what you did. (Surah Fussilat: 22)

Then, in another verse, He says that the secret, silent language they used in their earthly lives will be completely revealed:

... What confronts them from Allah will be something they did not reckon with. What confronts them will be the evil actions which they earned and what they used to mock at will engulf them. (Surat az-Zumar: 47-48)

Allah describes the state of these people in these words:

... people who plot evil deeds will suffer a harsh punishment... (Surah Fatir: 10)

Everyone who considers these facts must see the truth, and understand that satan has set a huge trap for human beings. They must immediately desist from wickedness and practice the kind of morality that pleases Allah. This is very easy to do, to beware of evil and live a good life, making goodness a principle.

In the Qur'an, Allah tells us that goodness will do away with evil:

... Good actions eradicate bad actions. This is a reminder for people who pay heed. (Surah Hud: 114)

Those who say, "Our Lord is Allah," and then go straight will feel no fear and will know no sorrow. (Surat al-Ahqaf: 13)

Allah tells us in the Qur'an that if human beings are steadfast in living good moral lives, He will remove fear and sorrow from them. He will forgive the wickedness they have done and give them the best reward for what they have done.

As for those who believe and do right actions, We will erase their bad actions from them, and recompense them for the best of what they did. (Surat al-'Ankabut: 7)