Isaiah 36:21

But they kept quiet and gave him no answer: for the king's order was, Give him no answer.

Proverbs 26:4

Do not give to the foolish man a foolish answer, or you will be like him.

2 Kings 18:26

Then Eliakim, the son of Hilkiah, and Shebna and Joah said to the Rab-shakeh, Will you kindly make use of the Aramaean language in talking to your servants, for we are used to it, and do not make use of the Jews' language in the hearing of the people on the wall.

2 Kings 18:37

Then Eliakim, the son of Hilkiah, who was over the house, and Shebna the scribe, and Joah, the son of Asaph, the recorder, came to Hezekiah, with their clothing parted as a sign of grief, and gave him an account of what the Rab-shakeh had said.

Psalm 39:1

I said, I will give attention to my ways, so that my tongue may do no wrong; I will keep my mouth under control, while the sinner is before me.

Proverbs 9:7-8

He who gives teaching to a man of pride gets shame for himself; he who says sharp words to a sinner gets a bad name.

Amos 5:13

So the wise will say nothing in that time; for it is an evil time.

Matthew 7:6

Do not give that which is holy to the dogs, or put your jewels before pigs, for fear that they will be crushed under foot by the pigs whose attack will then be made against you.

Treasury of Scripture Knowledge

Summary

But they held their peace, and answered him not a word: for the king's commandment was, saying, Answer him not.

Bible References

General references

2 Kings 18:26
Then Eliakim, the son of Hilkiah, and Shebna and Joah said to the Rab-shakeh, Will you kindly make use of the Aramaean language in talking to your servants, for we are used to it, and do not make use of the Jews' language in the hearing of the people on the wall.
Psalm 39:1
I said, I will give attention to my ways, so that my tongue may do no wrong; I will keep my mouth under control, while the sinner is before me.
Proverbs 9:7
He who gives teaching to a man of pride gets shame for himself; he who says sharp words to a sinner gets a bad name.
Proverbs 26:4
Do not give to the foolish man a foolish answer, or you will be like him.
Amos 5:13
So the wise will say nothing in that time; for it is an evil time.
Matthew 7:6
Do not give that which is holy to the dogs, or put your jewels before pigs, for fear that they will be crushed under foot by the pigs whose attack will then be made against you.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain