Titus 2:8

and healthy language which no one can censure, so that our opponents may feel ashamed at having nothing evil to say against us.

1 Peter 2:12

Live honourable lives among the Gentiles, in order that, although they now speak against you as evil-doers, they may yet witness your good conduct, and may glorify God on the day of reward and retribution.

2 Thessalonians 3:14

and if any one refuses to obey these our written instructions, mark that man and hold no communication with him--so that he may be made to feel ashamed.

1 Timothy 5:14

I would therefore have the younger women marry, bear children, rule in domestic matters, and furnish the Adversary with no excuse for slander.

1 Timothy 6:3

So teach and exhort. If any one is a teacher of any other kind of doctrine, and refuses assent to wholesome instructions--those of our Lord Jesus Christ--and the teaching that harmonizes with true godliness,

1 Peter 3:16

Yet argue modestly and cautiously, keeping your consciences free from guilt, so that, when you are spoken against, those who slander your good Christian lives may be put to shame.

Mark 12:17

"What is Caesar's," replied Jesus, "pay to Caesar--and what is God's, pay to God." And they wondered exceedingly at Him.

Mark 12:28

Then one of the Scribes, who had heard them disputing and well knew that Jesus had given them an answer to the point, and a forcible one, came forward and asked Him, "Which is the chief of all the Commandments?"

Mark 12:32

So the Scribe said to Him, "Rightly, in very truth, Rabbi, have you said that He stands alone, and there is none but He;

Mark 12:34

Perceiving that the Scribe had answered wisely Jesus said to him, "You are not far from the Kingdom of God." No one from that time forward ventured to put any question to Him.

Luke 13:17

When He had said this, all His opponents were ashamed, while the whole multitude was delighted at the many glorious things continually done by Him.

Philippians 2:14-16

Be ever on your guard against a grudging and contentious spirit,

1 Peter 2:15

For it is God's will that by doing what is right you should thus silence the ignorant talk of foolish persons.

Treasury of Scripture Knowledge

Summary

Sound speech, that cannot be condemned; that he that is of the contrary part may be ashamed, having no evil thing to say of you.

Bible References

That he

1 Timothy 5:14
I would therefore have the younger women marry, bear children, rule in domestic matters, and furnish the Adversary with no excuse for slander.
1 Peter 2:12
Live honourable lives among the Gentiles, in order that, although they now speak against you as evil-doers, they may yet witness your good conduct, and may glorify God on the day of reward and retribution.
1 Peter 3:16
Yet argue modestly and cautiously, keeping your consciences free from guilt, so that, when you are spoken against, those who slander your good Christian lives may be put to shame.

May

Luke 13:17
When He had said this, all His opponents were ashamed, while the whole multitude was delighted at the many glorious things continually done by Him.
2 Thessalonians 3:14
and if any one refuses to obey these our written instructions, mark that man and hold no communication with him--so that he may be made to feel ashamed.

Having

Philippians 2:14
Be ever on your guard against a grudging and contentious spirit,