Titus 2:8

let the instruction that you give be sound and above reproach, so that the enemy may be ashamed when he fails to find anything bad to say about us.

1 Peter 2:12

Let your daily life among the Gentiles be so upright, that, whenever they malign you as evil-doers, they may learn, as they watch, from the uprightness of your conduct, to praise God 'at the time when he shall visit them.'

2 Thessalonians 3:14

If any one disregards what we have said in this letter, mark that man and avoid his company, that he may feel ashamed.

1 Timothy 5:14

Therefore I advise young widows to marry, bear children, and attend to their homes, and so avoid giving the enemy an opportunity for scandal.

1 Timothy 6:3

Any one who teaches otherwise, and refuses his assent to sound instruction--the instruction of our Lord Jesus Christ--and to the teaching of religion,

1 Peter 3:16

and keeping your consciences clear, so that, whenever you are maligned, those who vilify your good and Christian conduct may be put to shame.

Mark 12:17

And Jesus replied: "Pay to the Emperor what belongs to the Emperor, and to God what belongs to God." And they wondered at him.

Mark 12:28

Then came up one of the Teachers of the Law who had heard their discussions. Knowing that Jesus had answered them wisely, he asked him this question: "What is the first of all the commandments?"

Mark 12:32

"Wisely answered, Teacher!" exclaimed the Teacher of the Law. "It is true, as you say, that 'there is one God,' and that 'there is no other besides him';

Mark 12:34

Seeing that he had answered with discernment, Jesus said to him: "You are not far from the Kingdom of God." After that no one ventured to question him further.

Luke 13:17

As he said this, his opponents all felt ashamed; but all the people rejoiced to see all the wonderful things that he was doing.

Philippians 2:14-16

In all that you do, avoid murmuring and dissension,

1 Peter 2:15

For God's will is this--that you should silence the ignorance of foolish people by doing what is right.

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
Therefore I advise young widows to marry, bear children, and attend to their homes, and so avoid giving the enemy an opportunity for scandal.
1 Peter 2:12
Let your daily life among the Gentiles be so upright, that, whenever they malign you as evil-doers, they may learn, as they watch, from the uprightness of your conduct, to praise God 'at the time when he shall visit them.'
1 Peter 3:16
and keeping your consciences clear, so that, whenever you are maligned, those who vilify your good and Christian conduct may be put to shame.

May

Luke 13:17
As he said this, his opponents all felt ashamed; but all the people rejoiced to see all the wonderful things that he was doing.
2 Thessalonians 3:14
If any one disregards what we have said in this letter, mark that man and avoid his company, that he may feel ashamed.

Having

Philippians 2:14
In all that you do, avoid murmuring and dissension,