Thematic Bible: Who purifies their soul

Look at how great a love the Father has given us, that we should be called God's children. And we are! The reason the world does not know us is that it didn't know Him. Dear friends, we are God's children now, and what we will be has not yet been revealed. We know that when He appears, we will be like Him, because we will see Him as He is. And everyone who has this hope in Him purifies himself just as He is pure.

For you know that you were redeemed from your empty way of life inherited from the fathers, not with perishable things, like silver or gold, but with the precious blood of Christ, like that of a lamb without defect or blemish. He was destined before the foundation of the world, but was revealed at the end of the times for you read more.
who through Him are believers in God, who raised Him from the dead and gave Him glory, so that your faith and hope are in God. By obedience to the truth, having purified yourselves for sincere love of the brothers, love one another earnestly from a pure heart, since you have been born again-not of perishable seed but of imperishable-through the living and enduring word of God.