What does Matthew 13 teach about wheat and tares?

In the parable of the wheat and tares, Jesus explains that the kingdom of heaven is like a field where good seed (wheat) and tares are sown together by an enemy. As they both grow, they are indistinguishable to the untrained eye, representing true believers and false believers living alongside each other. The Master allows them to coexist until the harvest, when the tares will be separated and burned while the wheat is gathered into His barn (Matthew 13:30). This teaches that believers must be discerning, steadfast, and patient, trusting God to ultimately judge and separate the true from the false at the appropriate time.