Proverbs 5:2

[in order] to keep prudence, and knowledge will guard your lips.

Psalm 45:2

You are [the most] handsome of [the] sons of humankind; grace is poured out on your lips; therefore God has blessed you forever.

Psalm 71:15

My mouth will tell of your righteousness, your salvation {all day long}, though I do not know [the full] sum [of them].

Psalm 119:13

With my lips I have told [of] all the ordinances of your mouth.

Proverbs 10:21

Lips of righteousness feed many, but fools {die for lack of sense}.

Proverbs 15:2

The tongue of the wise will dispense knowledge, but the mouth of fools will pour out folly.

Proverbs 15:7

The lips of the wise will spread knowledge, but the heart of fools, not so.

Proverbs 16:23

The heart of the wise will make his mouth judicious, and upon his lips, it will add persuasiveness.

Proverbs 20:15

There is gold and many costly stones, but precious jewels are lips of knowledge.

Song of Songs 4:11

Your lips drip nectar, [my] bride; honey and milk [are] under your lips; the scent of your garments [is] like the scent of Lebanon.

Malachi 2:6-7

[The] instruction of truth was in his mouth, and wickedness was not found on his lips. In peace and in uprightness he walked with me, and he brought back many from sin.

Treasury of Scripture Knowledge

Summary

That thou mayest regard discretion, and that thy lips may keep knowledge.

General references

Bible References

Thy lips

Proverbs 10:21
Lips of righteousness feed many, but fools {die for lack of sense}.
Proverbs 15:2
The tongue of the wise will dispense knowledge, but the mouth of fools will pour out folly.
Proverbs 16:23
The heart of the wise will make his mouth judicious, and upon his lips, it will add persuasiveness.
Proverbs 20:15
There is gold and many costly stones, but precious jewels are lips of knowledge.
Psalm 45:2
You are [the most] handsome of [the] sons of humankind; grace is poured out on your lips; therefore God has blessed you forever.
Psalm 71:15
My mouth will tell of your righteousness, your salvation {all day long}, though I do not know [the full] sum [of them].
Psalm 119:13
With my lips I have told [of] all the ordinances of your mouth.
Song of Songs 4:11
Your lips drip nectar, [my] bride; honey and milk [are] under your lips; the scent of your garments [is] like the scent of Lebanon.
Malachi 2:6
[The] instruction of truth was in his mouth, and wickedness was not found on his lips. In peace and in uprightness he walked with me, and he brought back many from sin.

General references

Proverbs 23:12
Apply your heart to instruction, and your ear to sayings of knowledge.