'Pure' in the Bible

but with precious blood, as of a faultless and pure lamb, the blood of Christ;

Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently:

Like newborn babies, thirst for the pure milk of the word so that by it you may grow in your salvation.

when they observe your pure, reverent lives.