'Pure' in the Bible

If thou be pure and upright, surely now he will awake for thee, and make the habitation of thy righteousness prosperous;

For thou sayest, My doctrine is pure, and I am clean in thine eyes.

What is man, that he should be pure? and he that is born of a woman, that he should be righteous?

Behold, he putteth no trust in his holy ones, and the heavens are not pure in his sight:

Although there is no violence in my hands, and my prayer is pure.

Lo, even the moon is not bright; and the stars are not pure in his sight:

The topaz of Ethiopia shall not be compared to it, neither shall it be set in the balance with pure gold.

I am clean without transgression; I am pure, and there is no iniquity in me;