James 5:12

Above all things, my Brothers, never take an oath, either by heaven, or by earth, or by anything else. With you let 'Yes' suffice for yes, and 'No' for no, so that you may escape condemnation.

Matthew 5:33-37

Again, you have heard that to our ancestors it was said--'Thou shalt not break an oath, but thou shall keep thine oaths as a debt due to the Lord.'

Matthew 23:16-22

Alas for you, you blind guides! You say 'if any answer by the Temple, his oath counts for nothing; but, if any one swears by the gold of the Temple, his oath is binding him'!

1 Corinthians 11:34

If a man is hungry, let him eat at home, so that your meetings may not bring a judgment upon you. The other details I will settle when I come.

2 Corinthians 1:17-20

As this was my plan, where, pray, did I show any fickleness of purpose? Or do you think that my plans are formed on mere impulse, so that in the same breath I say 'Yes' and 'No'?

James 3:1-2

I do not want many of you, my Brothers, to become teachers, knowing, as you do, that we who teach shall be judged by a more severe standard than others.

1 Peter 4:8

Above all things, let your love for one another be earnest, for 'Love throws a veil over countless sins.'

3 John 1:2

Dear friend, I pray that all may be well with you and that you may have good health--I know that all is well with your soul.

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.

Bible References

Above

1 Peter 4:8
Above all things, let your love for one another be earnest, for 'Love throws a veil over countless sins.'
3 John 1:2
Dear friend, I pray that all may be well with you and that you may have good health--I know that all is well with your soul.

Swear not

Matthew 5:33
Again, you have heard that to our ancestors it was said--'Thou shalt not break an oath, but thou shall keep thine oaths as a debt due to the Lord.'
Matthew 23:16
Alas for you, you blind guides! You say 'if any answer by the Temple, his oath counts for nothing; but, if any one swears by the gold of the Temple, his oath is binding him'!

But

2 Corinthians 1:17
As this was my plan, where, pray, did I show any fickleness of purpose? Or do you think that my plans are formed on mere impulse, so that in the same breath I say 'Yes' and 'No'?

Lest

James 3:1
I do not want many of you, my Brothers, to become teachers, knowing, as you do, that we who teach shall be judged by a more severe standard than others.
1 Corinthians 11:34
If a man is hungry, let him eat at home, so that your meetings may not bring a judgment upon you. The other details I will settle when I come.