Ephesians 5:4

nor obscene language, nor foolish talking, nor jesting, which are not becoming; but rather the cheerful words of. a thankful heart.

Ephesians 4:29

Let no impure speech come out of your mouth, but whatever is good for needful edification, that it may give grace to the hearers:

Romans 1:28

And as they refused to acknowledge God, God delivered them up to an undiscerning mind, to do detestable things;

Matthew 12:34-37

Generation of vipers, how can you, being evil, speak good things? For out of the abundance of the heart, the mouth speaks.

Mark 7:22

thefts, schemes for extortion, wicked deeds, deceit, wantonness, an evil eye, calumny, haughtiness, impiety.

John 6:23

(but there came other boats from Tiberias near the place where they had eaten bread, after the Lord had given thanks;)

2 Corinthians 1:11

if you also unite in prayer for our aid, that the favor bestowed on us, through the intercession of many persons, may cause thanks to be given by many for us.

2 Corinthians 9:15

Thanks be to God for his unspeakable gift.

Ephesians 1:16

do not cease to give thanks for you, making mention of you in my prayers,

Ephesians 5:19-20

speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord,

Philippians 4:6

Be anxious about nothing, but in every thing, by prayer and supplication with thanksgiving, let your requests be made known to God:

Colossians 3:8

But now do you also put away all these anger, wrath, malice, reviling, obscene language from your mouth.

Colossians 3:15-17

And let the peace of God, to which you are called in one body, rule in your hearts, and be thankful.

1 Thessalonians 3:9

For what thanks can we render to God for you, for the great joy with which we rejoice on your account before our God,

1 Thessalonians 5:18

in every thing give thanks; for this is the will of God in Christ Jesus concerning you.

Hebrews 13:15

Through him, therefore, let us offer the sacrifice of praise to God continually, that is, the fruit of our lips, giving thanks to his name.

James 3:4-8

Behold also the ships, which are very great, and are driven by violent winds; yet they are turned about by a very small helm, to whatever point the will of him that directs it may determine.

2 Peter 2:7

and delivered righteous Lot, wearied out with the licentious conduct of the lawless,

2 Peter 2:18

For by speaking boastful words of folly, they allure through the lusts of the flesh, and through lasciviousness, those who had really escaped from those who live in error.

Jude 1:10

But these speak evil of the things which they know not: and those things which they know naturally, as animals without reason, in these they corrupt themselves.

Jude 1:13

raging waves of the sea, foaming up their own shame: wandering stars, for whom the blackness of darkness is reserved forever.

Treasury of Scripture Knowledge

Summary

Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks.

Bible References

Convenient

Romans 1:28
And as they refused to acknowledge God, God delivered them up to an undiscerning mind, to do detestable things;
Philemon 1:8
Wherefore, though I have great boldness in Christ to command you to do that which is becoming,

But

Ephesians 5:19
speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord,
Ephesians 1:16
do not cease to give thanks for you, making mention of you in my prayers,
John 6:23
(but there came other boats from Tiberias near the place where they had eaten bread, after the Lord had given thanks;)
2 Corinthians 1:11
if you also unite in prayer for our aid, that the favor bestowed on us, through the intercession of many persons, may cause thanks to be given by many for us.
2 Corinthians 9:15
Thanks be to God for his unspeakable gift.
Philippians 4:6
Be anxious about nothing, but in every thing, by prayer and supplication with thanksgiving, let your requests be made known to God:
Colossians 3:15
And let the peace of God, to which you are called in one body, rule in your hearts, and be thankful.
1 Thessalonians 3:9
For what thanks can we render to God for you, for the great joy with which we rejoice on your account before our God,
1 Thessalonians 5:18
in every thing give thanks; for this is the will of God in Christ Jesus concerning you.
Hebrews 13:15
Through him, therefore, let us offer the sacrifice of praise to God continually, that is, the fruit of our lips, giving thanks to his name.