Proverbs 15:26

Evil devices are an abomination to Jehovah; But pleasant words are pure.

Psalm 19:14

Let the words of my mouth and the meditation of my heart Be acceptable in thy sight, O Jehovah, my rock, and my redeemer.

Psalm 37:30-31

The mouth of the righteous talketh of wisdom, And his tongue speaketh justice.

Psalm 45:1

My heart overfloweth with a goodly matter; I speak the things which I have made touching the king: My tongue is the pen of a ready writer.

Proverbs 6:16-19

There are six things which Jehovah hateth; Yea, seven which are an abomination unto him:

Proverbs 15:23

A man hath joy in the answer of his mouth; And a word in due season, how good is it!

Proverbs 24:9

The thought of foolishness is sin; And the scoffer is an abomination to men.

Jeremiah 4:14

O Jerusalem, wash thy heart from wickedness, that thou mayest be saved. How long shall thine evil thoughts lodge within thee?

Matthew 12:34-37

Ye offspring of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.

Matthew 15:19

For out of the heart come forth evil thoughts, murders, adulteries, fornications, thefts, false witness, railings:

Treasury of Scripture Knowledge

Summary

The thoughts of the wicked are an abomination to the LORD: but the words of the pure are pleasant words.

Bible References

Thoughts

Proverbs 6:16
There are six things which Jehovah hateth; Yea, seven which are an abomination unto him:
Proverbs 24:9
The thought of foolishness is sin; And the scoffer is an abomination to men.
Jeremiah 4:14
O Jerusalem, wash thy heart from wickedness, that thou mayest be saved. How long shall thine evil thoughts lodge within thee?
Matthew 15:19
For out of the heart come forth evil thoughts, murders, adulteries, fornications, thefts, false witness, railings:

American Standard Version Public Domain