James 5:12

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

Matthew 5:33-37

Again, ye have heard, that it was said to them of old time, Thou shalt not forswear thyself, but shalt perform thine oaths unto the Lord.

Matthew 23:16-22

Wo to you, ye blind guides; who say, Whosoever shall swear by the temple, it is nothing; but whosoever shall swear by the gold of the temple, he is bound.

1 Corinthians 11:34

And if any one be hungry, let him eat at home, that ye come not together to condemnation. And the rest I will set in order when I come.

2 Corinthians 1:17-20

Now when I was thus minded, did I use levity? or the things which I purpose, do I purpose according to the flesh, so that there should be with me yea and nay?

James 3:1-2

My brethren, be not many teachers, knowing that we shall receive greater condemnation.

1 Peter 4:8

And above all things, have fervent love to each other; for love will cover a multitude of sins.

3 John 1:2

Beloved, I wish above all things, that thou mayst prosper and be in health, as thy soul prospereth.

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
And above all things, have fervent love to each other; for love will cover a multitude of sins.
3 John 1:2
Beloved, I wish above all things, that thou mayst prosper and be in health, as thy soul prospereth.

Swear not

Matthew 5:33
Again, ye have heard, that it was said to them of old time, Thou shalt not forswear thyself, but shalt perform thine oaths unto the Lord.
Matthew 23:16
Wo to you, ye blind guides; who say, Whosoever shall swear by the temple, it is nothing; but whosoever shall swear by the gold of the temple, he is bound.

But

2 Corinthians 1:17
Now when I was thus minded, did I use levity? or the things which I purpose, do I purpose according to the flesh, so that there should be with me yea and nay?

Lest

James 3:1
My brethren, be not many teachers, knowing that we shall receive greater condemnation.
1 Corinthians 11:34
And if any one be hungry, let him eat at home, that ye come not together to condemnation. And the rest I will set in order when I come.