And every man that hath this hope in him purifieth himself, even as he is pure. 1 John 3:3.

Does this text mean that the human agent can remove one stain of sin from his soul? No. Then what does it mean to purify himself? It means to look upon the Lord’s great moral standard of righteousness, the holy law of God, and see that he is a sinner in the light of that law. “Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law. And ye know that he was manifested to take away our sins; and in him is no sin.” 1 John 3:4, 5. It is through faith in Jesus Christ that … the human agent is purified and cleansed…. “Whosoever abideth in him sinneth not.” Verse 6. God has power to keep the soul that is in Christ…. A mere profession of godliness is worthless. It is he that abideth in Christ that is a Christian….

In every clime, in every nation, our youth should cooperate with God. The only way a person can be pure is to become like-minded with God. How can we know God? By studying His Word….

Unless the mind of God becomes the mind of man, every effort to purify himself will be useless; for it is impossible to elevate man except through a knowledge of God. The outward gloss may be put on, and men may be as were the Pharisees whom Jesus describes as “whited sepulchres,” full of corruption and dead men’s bones. But all the deformity of the soul is open to Him who judgeth righteously, and unless the truth is planted in the heart, it cannot control the life. Cleansing the outside of the cup will never make the vessel pure within. A nominal acceptance of truth is good as far as it goes, and the ability to give a reason for our faith is a good accomplishment, but if the truth does not go deeper than this, the soul will never be saved. The heart must be purified from all moral defilement. “I know also my God, that thou triest the heart, and hast pleasure in uprightness.” 1 Chronicles 29:17. “Search me, O God, and know my heart: try me, and know my thoughts: and see if there be any wicked way in me, and lead me in the way everlasting.” Psalm 139:23, 24.^{32Letter 13, 1893.}