'Purify' in the Bible

and when they come from the market place, they do not eat unless they cleanse themselves [completely according to ritual]; and there are many other things [oral, man-made laws and traditions handed down to them] which they follow diligently, such as the washing of cups and pitchers and copper utensils.)

Now the Passover of the Jews was approaching, and many from the country went up to Jerusalem before Passover to purify themselves [ceremonially, so that they would be able to participate in the feast].

Sanctify them in the truth [set them apart for Your purposes, make them holy]; Your word is truth.

take these men and purify yourself along with them, and pay their expenses [for the temple offerings] so that they may shave their heads. Then everyone will know that there is nothing to the things they have been told about you, but that you yourself also follow and keep the Law.

who [willingly] gave Himself [to be crucified] on our behalf to redeem us and purchase our freedom from all wickedness, and to purify for Himself a chosen and very special people to be His own possession, who are enthusiastic for doing what is good.

how much more will the blood of Christ, who through the eternal [Holy] Spirit willingly offered Himself unblemished [that is, without moral or spiritual imperfection as a sacrifice] to God, cleanse your conscience from dead works and lifeless observances to serve the ever living God?

Therefore Jesus also suffered and died outside the [city] gate so that He might sanctify and set apart for God as holy the people [who believe] through [the shedding of] His own blood.

Come close to God [with a contrite heart] and He will come close to you. Wash your hands, you sinners; and purify your [unfaithful] hearts, you double-minded [people].