Matthew 19:10

His disciples said to him: If the relation of man and wife be such, it is not good to marry.

1 Corinthians 7:1-2

Now concerning the things of which you wrote to me, it is good for a man not to touch a woman.

1 Corinthians 7:8

But I say to the unmarried and to the widows: It would be good for them, if they remain as I myself.

1 Corinthians 7:26-28

I think, then, that this is good for the present affliction that it is good for a man to be as he is.

1 Corinthians 7:32-35

But I would have you to be without anxiety. The unmarried man is concerned about the things of the Lord, how he may please the Lord:

1 Corinthians 7:39-40

The wife is bound as long as her husband lives; but if her husband die, she is free to be married to whom she will, only in the Lord.

1 Timothy 4:3

who forbid to marry, and command to abstain from meats, which God has created to be received with thanksgiving by those who believe, and know the truth.

1 Timothy 5:11-15

But the younger widows reject: for when they become wanton against the 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 concerning the things of which you wrote to me, it is good for a man not to touch a woman.
1 Timothy 4:3
who forbid to marry, and command to abstain from meats, which God has created to be received with thanksgiving by those who believe, and know the truth.
1 Timothy 5:11
But the younger widows reject: for when they become wanton against the Christ, they desire to marry,