Matthew 19:10

The disciples say to him, If such be the case of a man with his wife, it is not good to marry.

1 Corinthians 7:1-2

Now as to the matters about which ye wrote, it is good for a man not to touch a woman;

1 Corinthians 7:8

I say also to the unmarried and the widows, it is good for them to remain as I am;

1 Corinthians 7:26-28

I think, then, that it is well, on account of the impending distress, for a man to remain as he is.

1 Corinthians 7:32-35

and I would have you free from anxious cares. He that is unmarried careth about the things of the Lord, how he may please the Lord;

1 Corinthians 7:39-40

The wife is bound to her husband as long as he liveth; but if her husband die, she is free to marry whom she will, only in the Lord.

1 Timothy 4:3

forbidding to marry, and commanding to abstain from food which God created to be received with thanksgiving, for those who believe and know the truth.

1 Timothy 5:11-15

But younger widows refuse; for when they become wanton against Christ, they desire to marry;

Treasury of Scripture Knowledge

Summary

His disciples say unto him, If the case of the man be so with his wife, it is not good to marry.

Bible References

General references

1 Corinthians 7:1
Now as to the matters about which ye wrote, it is good for a man not to touch a woman;
1 Timothy 4:3
forbidding to marry, and commanding to abstain from food which God created to be received with thanksgiving, for those who believe and know the truth.
1 Timothy 5:11
But younger widows refuse; for when they become wanton against Christ, they desire to marry;