James 5:12

But above all, my brethren, do not swear, either by heaven or by earth or with any other oath; but your yes is to be yes, and your no, no, so that you may not fall under judgment.

Matthew 5:33-37

“Again, you have heard that the ancients were told, ‘You shall not make false vows, but shall fulfill your vows to the Lord.’

Matthew 23:16-22

“Woe to you, blind guides, who say, ‘Whoever swears by the temple, that is nothing; but whoever swears by the gold of the temple is obligated.’

1 Corinthians 11:34

If anyone is hungry, let him eat at home, so that you will not come together for judgment. The remaining matters I will arrange when I come.

2 Corinthians 1:17-20

Therefore, I was not vacillating when I intended to do this, was I? Or what I purpose, do I purpose according to the flesh, so that with me there will be yes, yes and no, no at the same time?

James 3:1-2

Let not many of you become teachers, my brethren, knowing that as such we will incur a stricter judgment.

1 Peter 4:8

Above all, keep fervent in your love for one another, because love covers a multitude of sins.

3 John 1:2

Beloved, I pray that in all respects you may prosper and be in good health, just as your soul prospers.

Treasury of Scripture Knowledge

Summary

But above all things, my brethren, swear not, neither by heaven, neither by the earth, neither by any other oath: but let your yea be yea; and your nay, nay; lest ye fall into condemnation.

General references

Bible References

Above

1 Peter 4:8
Above all, keep fervent in your love for one another, because love covers a multitude of sins.
3 John 1:2
Beloved, I pray that in all respects you may prosper and be in good health, just as your soul prospers.

Swear not

Matthew 5:33
“Again, you have heard that the ancients were told, ‘You shall not make false vows, but shall fulfill your vows to the Lord.’
Matthew 23:16
“Woe to you, blind guides, who say, ‘Whoever swears by the temple, that is nothing; but whoever swears by the gold of the temple is obligated.’

But

2 Corinthians 1:17
Therefore, I was not vacillating when I intended to do this, was I? Or what I purpose, do I purpose according to the flesh, so that with me there will be yes, yes and no, no at the same time?

Lest

James 3:1
Let not many of you become teachers, my brethren, knowing that as such we will incur a stricter judgment.
1 Corinthians 11:34
If anyone is hungry, let him eat at home, so that you will not come together for judgment. The remaining matters I will arrange when I come.

General references

Deuteronomy 5:11
You shall not take the name of the Lord your God in vain, for the Lord will not leave him unpunished who takes His name in vain.