The kingdom of heaven may be compared to someone who sowed good seed in his field; but while everybody was asleep, an enemy came and sowed weeds among the wheat, and then went away. Matthew 13:24, 25, NRSV.
The Lord has a work to do in our world, but He will not trust His work in the hands of people who know nothing of the Bible or of the mysteries of the kingdom of heaven. The Lord presents in parables the rise and progress of the work that results from the preaching of His Word, the present truth for this time. He brings before us the fashioning of a church that shall stand before the world as chosen and faithful. The parable of the sower shows the manner in which we should work. The work of the gospel ministry is the sowing of the seed....
The parable of the wheat and the tares shows the mystery of the divine and the satanic agencies working in direct opposition, in vital conflict. The conflict continues till the close of this earth's history. The incorruptible seed is the living Word of God, which works in the personal sanctification of the receivers, elevating them by bringing them into the participation of the divine nature.
Many matters need to be considered. Those who have all their lifetime been the servants of sin, desiring to act in direct opposition to the divine will, need to be most thoroughly converted. Otherwise the leaven of evil will work under cover, as Satan appearing like an angel of light tempted Christ to oppose the divine will. God's great standard of righteousness is obnoxious to the tastes and appetites of sinful men and women. The active energy of the Saviour and that of the destroyer are in conflict.
The wheat is to be gathered for Christ's garner. The tares have the appearance of wheat, but when the harvest comes they must be rejected. Yet there is an imitation of the wheat through a long period of time. Satan puts forth a determined effort to deceive and lead into strange paths those who have any connection with the Word of God, and he will devise every possible scheme to lengthen the period of his control. The Lord God of heaven gives no sanction to mix and corrupt church associations. The Lord would have His work in the preaching of the gospel so done that there will be no encouragement to evil workers, no toleration of evil associations in Christian assemblies.—Manuscript 7, 1900.
From Christ Triumphant - Page 236
Christ Triumphant