Sins of the tongue

Tongue is interpreter of heart and key of personality Correction of tongue and speech has assumed a major importance in moral discussions because tongue is interpreter of heart, representative of intellect, key of man's personality, and the most important window to man's soul.
In the other words, what is depicted on the tablet of man's soul (including mental, emotional and sentimental events), first of all emerges on the tongue and within his speeches. If in the past, physicians recognized a major part of moderation and unbalance of temperament through the condition of tongue, nowadays psychoanalysts mostly seek mental problems within the individuals' speeches!
On these accounts, ethic scholars consider a special importance for correction of tongue and deem its correction as the sign of spirit's perfection and strengthening of prominent moral virtues and habits.

This reality is also stated in the traditions of the Prophet's House A.S. in short and interesting phrases. Two following phrases narrated respectively from Imam Ali A.S. and Imam Sadegh A.S. is evidences for this claim:
1- Man is hidden under his tongue. [1]
That is to say not only scientific personality, but also moral and social personality and in general his humanistic personality is under his tongue, and as long as he has not spoken, his fault and virtue is concealed.
2- Firmness and straightness of belief is not possible without firmness and straightness of heart, and the latter too will not exist without firmness and straightness of tongue. [2]

Thirty great sins, which originate from tongue. the importance of correction of tongue is made clearer when we know that a large part of sins as a large part of good deeds are performed by tongue.

Footnote:
1. Nahjol Balaghe, aphorisms, 148
2. Majlessi, Beharol Anvar, 262/75, and Mohajjatol Beisae, 193/5

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