'Pure' in the Bible

Drink water from your own cistern [of a pure marriage relationship]And fresh running water from your own well.

Evil plans and thoughts of the wicked are exceedingly vile and offensive to the Lord,But pure words are pleasant words to Him.

All the ways of a man are clean and innocent in his own eyes [and he may see nothing wrong with his actions],But the Lord weighs and examines the motives and intents [of the heart and knows the truth].

When the wicked man comes [to the depth of evil], contempt [of all that is pure and good] also comes,And with inner baseness (dishonor) comes outer shame (scorn).

The words of a man’s mouth are like deep waters [copious and difficult to fathom];The fountain of [mature, godly] wisdom is like a bubbling stream [sparkling, fresh, pure, and life-giving].

Who can say, “I have cleansed my heart,I am pure from my sin?”

Even a boy is known and distinguished by his acts,Whether his conduct is pure and right.

The way of the guilty is [exceedingly] crooked,But as for the pure, his conduct is upright.

He who loves purity of heartAnd whose speech is gracious will have the king as his friend.

There is a generation (class of people) that is pure in its own eyes,Yet is not washed from its filthiness.

She makes for herself coverlets, cushions, and rugs of tapestry.Her clothing is linen, pure and fine, and purple [wool].