“But he said, Nay; lest while ye gather up the tares, ye root up also the wheat with them. Let both grow together until the harvest: and in the time of harvest I will say to the reapers, Gather ye together first the tares, and bind them in bundles to burn them: but gather the wheat into my barn.” - Matthew 13:29, 30.
The feast of harvest, also called the feast of weeks, was one of the festivals God commanded the Jews to keep. (Exodus 23:15-19; see also Deuteronomy 16:9-12) To all true Christians however, the harvest in time of old pointed to the end of the world, the age of spiritual harvest, when God Almighty would be gathering His sheep into His fold through the preaching of the gospel. (Luke 10:2) This work will continue until the end as Jesus Christ said, while explaining the parable of the wheat and tares. He declared, “The Son of man shall send forth his angels, and they shall gather out of his kingdom all things that offend, and them which do iniquity; And shall cast them into a furnace of fire: there shall be wailing and gnashing of teeth.” (Matthew 13:24-30, 41, 42) It is also evident that the devil deliberately plants wicked people in the work of God to cause confusion. Such will be destroyed by the Lord Himself in his own time. Each person has to ask himself what kind of plant he or she is in the work of God, wheat or tares? St. Peter declared “For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God?” – 1 Peter 4:17.