1 Peter 2:22

Who did no sin, neither was guile found in his mouth:

James 1:26

If any one be ever so religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.

James 3:2

For in many things we offend all. If any one offend not in word, the same is a perfect man, able also to bridle the whole body.

1 Peter 2:1

Wherefore laying aside all wickedness, and all guile, and dissimulation, and envies,

Matthew 12:35-37

A good man out of the good treasure bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.

Colossians 3:9

Lie not one to another, seeing ye have put off the old man with his deeds,

James 1:19

Wherefore, my beloved brethren, let every man be swift to hear, slow to speak, slow to wrath.

James 3:5-10

So the tongue also is a little member, yet boasteth great things. Behold how much matter a little fire kindleth.

Revelation 14:4-5

These are they who had not been defiled with women; for they are virgins: these are they who follow the Lamb whithersoever he goeth. These were bought from among men: first-fruits to God and the Lamb.

Treasury of Scripture Knowledge

Summary

Keep thy tongue from evil, and thy lips from speaking guile.

Bible References

Keep

Matthew 12:35
A good man out of the good treasure bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.
James 1:19
Wherefore, my beloved brethren, let every man be swift to hear, slow to speak, slow to wrath.
James 3:2
For in many things we offend all. If any one offend not in word, the same is a perfect man, able also to bridle the whole body.

Speaking

Colossians 3:9
Lie not one to another, seeing ye have put off the old man with his deeds,
1 Peter 2:1
Wherefore laying aside all wickedness, and all guile, and dissimulation, and envies,
Revelation 14:4
These are they who had not been defiled with women; for they are virgins: these are they who follow the Lamb whithersoever he goeth. These were bought from among men: first-fruits to God and the Lamb.