For the Christian, the use of the tongue must be a matter of careful forethought and discipline. The Bible warns that believers who do not bring restraint to their tongue and speech have been deceived — and without such control over their words, their religious acts are worthless and hypocritical.
“If anyone thinks he is religious and does not bridle his tongue but deceives his heart, this person’s religion is worthless” (James 1:26).
The true test of a man’s spirituality is not his ability to speak, but rather his ability to bridle his tongue!
The tongue, though it is cursed by sin, is not inherently evil. It can be used to glorify God and build people up, or it can be used to curse God and tear people apart.
Discipline of the Tongue
7 Listen, my children, to instruction concerning the mouth;
the one who observes it will never be caught.
8 Sinners are overtaken through their lips;
by them the reviler and the arrogant are tripped up.
9 Do not accustom your mouth to oaths,
nor habitually utter the name of the Holy One;
10 for as a servant who is constantly under scrutiny
will not lack bruises,
so also the person who always swears and utters the Name
will never be cleansed from sin.
11 The one who swears many oaths is full of iniquity,
and the scourge will not leave his house.
If he swears in error, his sin remains on him,
and if he disregards it, he sins doubly;
if he swears a false oath, he will not be justified,
for his house will be filled with calamities. (Sirach 23:7 to 11)
12 There is a manner of speaking comparable to death;
may it never be found in the inheritance of Jacob!
Such conduct will be far from the godly,
and they will not wallow in sins.
13 Do not accustom your mouth to coarse, foul language,
for it involves sinful speech.
14 Remember your father and mother
when you sit among the great,
or you may forget yourself in their presence,
and behave like a fool through bad habit;
then you will wish that you had never been born,
and you will curse the day of your birth.
15 Those who are accustomed to using abusive language
will never become disciplined as long as they live. (Sirach 23:12 to 15)