Proverbs 15:26

Evil designs are disgusting to the Lord, but the words of the clean-hearted are pleasing.

Psalm 19:14

Let the words of my mouth and the thoughts of my heart be pleasing in your eyes, O Lord, my strength and my salvation.

Psalm 37:30-31

The mouth of the good man says words of wisdom; the talk of his tongue is of righteousness.

Psalm 45:1

My heart is flowing over with good things; my words are of that which I have made for a king; my tongue is the pen of a ready writer.

Proverbs 6:16-19

Six things are hated by the Lord; seven things are disgusting to him:

Proverbs 15:23

A man has joy in the answer of his mouth: and a word at the right time, how good it is!

Proverbs 24:9

The purpose of the foolish is sin: and the hater of authority is disgusting to others.

Jeremiah 4:14

O Jerusalem, make your heart clean from evil, so that you may have salvation. How long are evil purposes to have a resting-place in you?

Matthew 12:34-37

You offspring of snakes, how are you, being evil, able to say good things? because out of the heart's store come the words of the mouth.

Matthew 15:19

For out of the heart come evil thoughts, the taking of life, broken faith between the married, unclean desires of the flesh, taking of property, false witness, bitter words:

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
Six things are hated by the Lord; seven things are disgusting to him:
Proverbs 24:9
The purpose of the foolish is sin: and the hater of authority is disgusting to others.
Jeremiah 4:14
O Jerusalem, make your heart clean from evil, so that you may have salvation. How long are evil purposes to have a resting-place in you?
Matthew 15:19
For out of the heart come evil thoughts, the taking of life, broken faith between the married, unclean desires of the flesh, taking of property, false witness, bitter words:

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain