Matthew 5:37

But let your discourse be, Yea, yea; No, no: for all addition to these is from the wicked one.

James 5:12

But above all things, my brethren, swear not, neither by heaven, nor by earth, nor by any other oath: but let your yea be yea, and your no, no; that ye fall not under condemnation.

Matthew 13:19

When any person heareth the word of the kingdom, and doth not understand it, the wicked one cometh, and snatcheth away what was sown on his heart: such is he who is the sown by the road-side.

Matthew 13:38

the field is the world: and the good seed are those who are the children of the kingdom; but the zizane are the children of the wicked one;

Matthew 15:19

for out of the heart proceed wicked reasonings, murders, adulteries, whoredoms, thefts, false testimonies, blasphemies:

John 8:44

Ye are of your father the devil, and the lusts of your father ye will practise. He was a murderer from the beginning, and stood not fast in the truth, because truth was not in him. When he speaketh a lie, he speaketh what is peculiarly his own: for he is a liar, and the father of it.

John 17:15

I entreat not that thou shouldest take them out of the world, but that thou shouldest preserve them from the wicked one.

2 Corinthians 1:17-20

Such then being my intention, did I indeed change it with levity? or the things which I purpose, do I purpose after the flesh, that with me there should be yea, yea, and nay, nay?

Ephesians 4:25

Wherefore putting away lying, speak truth, every one with his neighbour: for we are members one of another.

Colossians 3:9

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

Colossians 4:6

Let your discourse be always gracious, seasoned with salt, that ye may know how ye ought to reply to every man.

2 Thessalonians 3:3

But the Lord is faithful, who will stablish you, and keep you from the wicked one.

1 John 2:13

I write unto you, fathers, because ye have known him that is from the beginning. I write unto you, young men, because ye have overcome the wicked one. I write unto you, little children, because ye have known the Father.

1 John 3:12

Not as Cain, who was of the wicked one, and slew his brother: and wherefore did he slay him? Because his own works were wicked, and those of his brother righteous.

1 John 5:18

We know that every one who is born of God sinneth not; but he that is born of God preserveth himself, and the wicked one toucheth him not.

Matthew 6:13

And lead us not into temptation; but deliver us from evil: for thine is the kingdom, and the power, and the glory, for ever and ever. Amen!

Treasury of Scripture Knowledge

Summary

But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil.

Bible References

Let

2 Corinthians 1:17
Such then being my intention, did I indeed change it with levity? or the things which I purpose, do I purpose after the flesh, that with me there should be yea, yea, and nay, nay?
Colossians 4:6
Let your discourse be always gracious, seasoned with salt, that ye may know how ye ought to reply to every man.
James 5:12
But above all things, my brethren, swear not, neither by heaven, nor by earth, nor by any other oath: but let your yea be yea, and your no, no; that ye fall not under condemnation.

Cometh

Matthew 13:19
When any person heareth the word of the kingdom, and doth not understand it, the wicked one cometh, and snatcheth away what was sown on his heart: such is he who is the sown by the road-side.
Matthew 15:19
for out of the heart proceed wicked reasonings, murders, adulteries, whoredoms, thefts, false testimonies, blasphemies:
John 8:44
Ye are of your father the devil, and the lusts of your father ye will practise. He was a murderer from the beginning, and stood not fast in the truth, because truth was not in him. When he speaketh a lie, he speaketh what is peculiarly his own: for he is a liar, and the father of it.
Ephesians 4:25
Wherefore putting away lying, speak truth, every one with his neighbour: for we are members one of another.
Colossians 3:9
Lie not one to another, seeing ye have put off the old man with his practices;
James 5:12
But above all things, my brethren, swear not, neither by heaven, nor by earth, nor by any other oath: but let your yea be yea, and your no, no; that ye fall not under condemnation.