'Pure' in the Bible

Consider it pure joy, my brothers, when you are involved in various trials,

A religion that is pure and stainless according to God the Father is this: to take care of orphans and widows who are suffering, and to keep oneself unstained by the world.

However, the wisdom that comes from above is first of all pure, then peace-loving, gentle, willing to yield, full of compassion and good deeds, and without a trace of partiality or hypocrisy.