Another parable put he forth unto them, saying, The kingdom of heaven is likened unto a man which sowed good seed in his field: But while men slept, his enemy came and sowed tares among the wheat, and went his way. But when the blade was sprung up, and brought forth fruit, then appeared the tares also. So the servants of the householder came and said unto him, Sir, didst not thou sow good seed in thy field? from whence then hath it tares? He said unto them, An enemy hath done this. The servants said unto him, Wilt thou then that we go and gather them up? 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. … Then Jesus sent the multitude away, and went into the house: and his disciples came unto him, saying, Declare unto us the parable of the tares of the field. He answered and said unto them, He that soweth the good seed is the Son of man; The field is the world; the good seed are the children of the kingdom; but the tares are the children of the wicked one; The enemy that sowed them is the devil; the harvest is the end of the world; and the reapers are the angels. As therefore the tares are gathered and burned in the fire; so shall it be in the end of this world. 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. Then shall the righteous shine forth as the sun in the kingdom of their Father. Who hath ears to hear, let him hear.

Matthew 13:24-30, 36-43

Jesus continues to teach  using the example of a sower and seed in this parable. However, a different aspect of the kingdom of God is being described in this teaching. In the two previous parables, the sower has been the minister of the gospel. In this parable, Jesus tells us that the sower is the Son of Man.

Throughout all four gospel accounts, the title Son of Man is attributed to the Messiah, Who is Jesus. Therefore, this parable describes a sowing that God Himself does.

So, Jesus is saying, “This is what I do.”

Jesus also tells us that the field is the world. This means that it is still a teaching about the kingdom of God but on a much larger scale that encompasses all the world, not just a local gospel assembly.  The sowing done by Jesus is the direct operation of God in regenerating the elect of God in the new birth.  

We can also  understand an important thing about the details in parables in this example. The sower is said to sleep and seems unaware that someone else has come into his field.  But Jesus is the Son of God and never sleeps. Therefore, this is showing us that the work of Satan in the world is in direct opposition to the will of God. God is not using the work of sin to bring about some greater good. God is not involved in the work of Satan. God hates sin and will judge  the wicked for their deeds at the end of time.