"He put another parable before them, saying, 'The kingdom of heaven may be compared to a man who sowed good seed in his field, but while his men were sleeping, his enemy came and sowed weeds among the wheat and went away. So when the plants came up and bore grain, then the weeds appeared also. And the servants of the master of the house came and said to him, ‘Master, did you not sow good seed in your field? How then does it have weeds?’ He said to them, ‘An enemy has done this.’ So the servants said to him, ‘Then do you want us to go and gather them?’ But he said, ‘No, lest in gathering the weeds you root up the wheat along with them. Let both grow together until the harvest, and at harvest time I will tell the reapers, Gather the weeds first and bind them in bundles to be burned, but gather the wheat into my barn.’" (Matthew 13:24-30)
Though God's servants were initially ignorant of what the enemy had done, God was not. It was magnificently ordained for the sake of His elect, that by growing alongside the weeds, they may have the contrast to know Him intimately, for without evil, one can not know love.
And what good comes about from the human suffering that goes with all this? The rich and abundant life here and now by way of dying to our own cause and comfort, and like Jesus, denying ourselves the world to be gained, that we would receive eternal rewards in heaven. Is it worth it? Some will say absolutely not. They will continue to serve themselves for the gain of what is inevitably passing away. Those with God's Spirit say absolutely so, because they...
"... consider that the sufferings of this present time are not worth comparing with the glory that is to be revealed to us. For the creation waits with eager longing for the revealing of the sons of God. For the creation was subjected to futility, not willingly, but because of him who subjected it, in hope that the creation itself will be set free from its bondage to corruption and obtain the freedom of the glory of the children of God. For we know that the whole creation has been groaning together in the pains of childbirth until now. And not only the creation, but we ourselves, who have the first fruits of the Spirit, groan inwardly as we wait eagerly for adoption as sons, the redemption of our bodies. For in this hope we were saved. Now hope that is seen is not hope. For who hopes for what he sees? But if we hope for what we do not see, we wait for it with patience." (Romans 8:18-25)
"How great is the love the Father has lavished on us, that we should be called children of God! And that is what we are! The reason the world does not know us is that it did not know him. Dear friends, now we are children of God, and what we will be has not yet been made known. But we know that when he appears, we shall be like him, for we shall see him as he is. Everyone who has this hope in him purifies himself, just as he is pure." (1John 3:1-3)