Matthew 5:37

But let your speech be, Yea, yea; Nay, nay: and whatsoever is more than these is of the evil one .

James 5:12

But above all things, my brethren, swear not, neither by the heaven, nor by the earth, nor by any other oath: but let your yea be yea, and your nay, nay; that ye fall not under judgment.

Matthew 13:19

When any one heareth the word of the kingdom, and understandeth it not, then cometh the evil one , and snatcheth away that which hath been sown in his heart. This is he that was sown by the way side.

Matthew 13:38

and the field is the world; and the good seed, these are the sons of the kingdom; and 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 witness, railings:

John 8:44

Ye are of your father the devil, and the lusts of your father it is your will to do. He was a murderer from the beginning, and standeth not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father thereof.

John 17:15

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

2 Corinthians 1:17-20

When I therefore was thus minded, did I show fickleness? or the things that 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, putting away falsehood, speak ye truth each one with his neighbor: for we are members one of another.

Colossians 3:9

lie not one to another; seeing that ye have put off the old man with his doings,

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 shall establish you, and guard you from the evil one .

1 John 2:13

I write unto you, fathers, because ye know him who is from the beginning. I write unto you, young men, because ye have overcome the evil one. I have written unto you, little children, because ye know the Father.

1 John 3:12

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

1 John 5:18

We know that whosoever is begotten of God sinneth not; but he that was begotten of God keepeth himself, and the evil one toucheth 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 I therefore was thus minded, did I show fickleness? or the things that 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, neither by the heaven, nor by the earth, nor by any other oath: but let your yea be yea, and your nay, nay; that ye fall not under judgment.

Cometh

Matthew 13:19
When any one heareth the word of the kingdom, and understandeth it not, then cometh the evil one , and snatcheth away that which hath been sown in his heart. This is he that was sown by the way side.
Matthew 15:19
For out of the heart come forth evil thoughts, murders, adulteries, fornications, thefts, false witness, railings:
John 8:44
Ye are of your father the devil, and the lusts of your father it is your will to do. He was a murderer from the beginning, and standeth not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father thereof.
Ephesians 4:25
Wherefore, putting away falsehood, speak ye truth each one with his neighbor: for we are members one of another.
Colossians 3:9
lie not one to another; seeing that ye have put off the old man with his doings,
James 5:12
But above all things, my brethren, swear not, neither by the heaven, nor by the earth, nor by any other oath: but let your yea be yea, and your nay, nay; that ye fall not under judgment.

American Standard Version Public Domain