Isaiah 36:21
But they were silent and answered him not a word, for the king's command was, "Do not answer him."
Proverbs 26:4
Answer not a fool according to his folly, lest you be like him yourself.
2 Kings 18:26
Then Eliakim the son of Hilkiah, and Shebnah, and Joah, said to the Rabshakeh, "Please speak to your servants in Aramaic, for we understand it. Do not speak to us in the language of Judah within the hearing of the people who are on the wall."
2 Kings 18:37
Then Eliakim the son of Hilkiah, who was over the household, and Shebna the secretary, and Joah the son of Asaph, the recorder, came to Hezekiah with their clothes torn and told him the words of the Rabshakeh.
Psalm 38:13-15
But I am like a deaf man; I do not hear, like a mute man who does not open his mouth.
Psalm 39:1
I said, "I will guard my ways, that I may not sin with my tongue; I will guard my mouth with a muzzle, so long as the wicked are in my presence."
Proverbs 9:7-8
Whoever corrects a scoffer gets himself abuse, and he who reproves a wicked man incurs injury.
Amos 5:13
Therefore he who is prudent will keep silent in such a time, for it is an evil time.
Matthew 7:6
"Do not give dogs what is holy, and do not throw your pearls before pigs, lest they trample them underfoot and turn to attack you.