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
So, when I made this decision, was I just vacillating [in uncertainty]? Or, do I make plans in a worldly way [i.e., just to suit my own fancy], so that my "yes" and "no" [do not really mean anything]?
Colossians 4:6
Your speech should always be favorable, seasoned with salt [i.e., interesting and appropriate], so that you may know how to properly answer each person [you talk with].
James 5:12
But above everything else, my brothers, do not take oaths, not "by the heaven," nor "by the earth," nor by any other oath. But your "yes" should be [simply] "yes," and your "no," [simply] "no," so you do not fall under condemnation.

Cometh

Matthew 13:19
When anyone hears the message of the kingdom but does not understand it, the evil one [i.e., the devil] comes to him and grabs away what had been sown in his heart. This is the person who was scattered to the side of the road.
Matthew 15:19
For evil thoughts, murder, extramarital affairs, sexual immorality, stealing, perjury, slander --- [all these] come from a person's heart,
John 8:44
You belong to your father the devil, and you are [always] wanting to do what your father desires. He was a murderer from the [very] beginning [Note: This is probably a reference to Satan's influence on Adam, Eve and Cain in the Garden of Eden] and does not stand for the truth, because there is no truth in him. When he lies, he only speaks what is part of his nature, because he is a liar and the father of [all] liars.
Ephesians 4:25
So then, put away lying and [Zech 8:16], "Each one should speak truthfully with his neighbor," because we are parts of one another [i.e., in the one body].
Colossians 3:9
Do not lie to one another, since you have put away [the conduct of] your old person with its practices,
James 5:12
But above everything else, my brothers, do not take oaths, not "by the heaven," nor "by the earth," nor by any other oath. But your "yes" should be [simply] "yes," and your "no," [simply] "no," so you do not fall under condemnation.