New Revised Standard Version
so that you may hold on to prudence, and your lips may guard knowledge.

Contemporary English Version
you will have sound judgment, and you will always know the right thing to say.

New American Bible
That you may act discreetly, and your lips guard what you know.

Douay-Rheims Bible
For the lips of a harlot are like a honeycomb dropping, and her throat is smoother than oil.

For the lips of a harlot are like a honeycomb dropping, and her throat is smoother than oil.

thy lips

Proverbs 10:21 The blessing of the Lord maketh men rich: neither shall affliction be joined to them.

Proverbs 15:2,7 The tongue of the wise adorneth knowledge: but the mouth of fools bubbleth out folly. . . .

Proverbs 16:23 The heart of the wise shall instruct his mouth: and shall add grace to his lips.

Proverbs 20:15 There is gold and a multitude of jewels: but the lips of knowledge are a precious vessel.

Psalm 45:2 Thou art beautiful above the sons of men: grace is poured abroad in thy lips; therefore hath God blessed thee for ever.

Psalm 71:15 My mouth shall shew forth thy justice; thy salvation all the day long. Because I have not known learning,

Psalm 119:13 With my lips I have pronounced all the judgments of thy mouth.

Songs 4:11 Thy lips, my spouse, are as a dropping honeycomb, honey and milk are under thy tongue; and the smell of thy garments, as the smell of frankincense.

Malachi 2:6,7 The law of truth was in his mouth, and iniquity was not found in his lips: he walked with me in peace, and in equity, and turned many away from iniquity. . . .