Matthew 5:37

But let your speech be, 'Yes, yes;' 'No, no;' and what is more than these is of the evil one.

James 5:12

But above all things, my brethren, swear not, either by Heaven, or by earth, or by any other oath; but let yours be "the yes, yes," and "the no, no"; that ye fall not under condemnation.

Matthew 13:19

When any one hears the word of the Kingdom, and understands it not, the evil one comes, and snatches away what has been sown in his heart: this is he that was sown by the wayside.

Matthew 13:38

The field is the world: and the good seed, these are the sons of the Kingdom; but the tares are the sons of the evil one;

Matthew 15:19

For out of the heart come forth evil thoughts, murders, adulteries, fornications, thefts, false-witnessings, blasphemies:

John 8:44

Ye are of your father the Devil; and the desires of your father ye wish to do. He was a murderer from the beginning, and has not stood in the truth, because there is no truth in him. When he speaks a lie, he speaks of his own; because he is a liar, and the father of it.

John 17:15

I pray not that Thou shouldest take them out of the world, but that Thou shouldest keep them from the evil one.

2 Corinthians 1:17-20

When, therefore, I was purposing this, did I manifest fickleness or the things which I purpose, do I purpose according to the flesh, that with me there should be the "Yea, yea," and the "Nay, nay?"

Ephesians 4:25

Wherefore, having put away false-hood, speak ye truth each one with his neighbor, because we are members one of another.

Colossians 3:9

Lie not one to another, having put off the old man with his practices,

Colossians 4:6

Let your speech be always with grace, seasoned with salt, that ye may know how ye ought to answer each one.

2 Thessalonians 3:3

But the Lord is faithful, Who will establish you, and guard you from the evil one.

1 John 2:13

I write to you, fathers, because ye have known Him Who is from the beginning. I write to you, young men, because ye have conquered the evil one. I wrote to you, little children, because ye have known the Father.

1 John 3:12

not as Cain who was of the evil one, and slew his brother. And wherefore did he slay him? Because his own works were evil, and his brother's righteous.

1 John 5:18

We know that every one who has been begotten of God sins not; but he who was begotten of God keeps himself, and the evil one touches him not.

Matthew 6:13

And bring us not into temptation but deliver us from the evil one.'

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
When, therefore, I was purposing this, did I manifest fickleness or the things which I purpose, do I purpose according to the flesh, that with me there should be the "Yea, yea," and the "Nay, nay?"
Colossians 4:6
Let your speech be always with grace, seasoned with salt, that ye may know how ye ought to answer each one.
James 5:12
But above all things, my brethren, swear not, either by Heaven, or by earth, or by any other oath; but let yours be "the yes, yes," and "the no, no"; that ye fall not under condemnation.

Cometh

Matthew 13:19
When any one hears the word of the Kingdom, and understands it not, the evil one comes, and snatches away what has been sown in his heart: this is he that was sown by the wayside.
Matthew 15:19
For out of the heart come forth evil thoughts, murders, adulteries, fornications, thefts, false-witnessings, blasphemies:
John 8:44
Ye are of your father the Devil; and the desires of your father ye wish to do. He was a murderer from the beginning, and has not stood in the truth, because there is no truth in him. When he speaks a lie, he speaks of his own; because he is a liar, and the father of it.
Ephesians 4:25
Wherefore, having put away false-hood, speak ye truth each one with his neighbor, because we are members one of another.
Colossians 3:9
Lie not one to another, having put off the old man with his practices,
James 5:12
But above all things, my brethren, swear not, either by Heaven, or by earth, or by any other oath; but let yours be "the yes, yes," and "the no, no"; that ye fall not under condemnation.