'Pure' in the Bible

The words and promises of the Lord are pure words,Like silver refined in an earthen furnace, purified seven times.

With the pure You show Yourself pure,And with the crooked You show Yourself astute.

The precepts of the Lord are right, bringing joy to the heart;The commandment of the Lord is pure, enlightening the eyes.

For You meet him with blessings of good things;You set a crown of pure gold on his head.

He who has clean hands and a pure heart,Who has not lifted up his soul to what is false,Nor has sworn [oaths] deceitfully.

Wash me thoroughly from my wickedness and guiltAnd cleanse me from my sin.

Truly God is good to Israel,To those who are pure in heart.

Your word is very pure (refined);Therefore Your servant loves it.