Who and what will purify the SDA Church?

The Publishing Ministry, p. 170

The Lord will work to purify His church. I tell you in truth, the Lord is about to turn and overturn in the institutions called by His name. Just how soon this refining process will begin I cannot say, but it will not be long deferred. He whose fan is in His hand will cleanse His temple of its moral defilement. He will thoroughly purge His floor.

The Acts of the Apostles, pp. 524-525

God's care for His heritage is unceasing. He suffers no affliction to come upon His children but such as is essential for their present and eternal good. He will purify His church, even as Christ purified the temple during His ministry on earth. All that He brings upon His people in test and trial comes that they may gain deeper piety and greater strength to carry forward the triumphs of the cross.

Spiritual Gifts, Vol. 2, p. 284

The shaking must soon take place to purify the church.

Early Writings, p. 270

The solemn testimony upon which the destiny of the church hangs has been lightly esteemed, if not entirely disregarded. This testimony must work deep repentance; all who truly receive it will obey it and be purified.

Testimonies for the Church, Vol. 1, p. 216

I have been shown that the Lord is reviving the living, pointed testimony, which will develop character and purify the church.

Ibid., Vol. 4, p. 210

He [Satan] seeks by all the means in his power to shake the confidence of God's people in the voice of warning and reproof through which God designs to purify the church and prosper His cause.

Ibid., Vol. 5, p. 109

Every man must purify his soul through obedience to the truth, and with an eye single to God's glory he must abase self and exalt Jesus and His grace.