What does Matthew 9:31 mean?

Jesus has once again commanded someone He has miraculously healed not to tell anyone about it (Matthew 8:4; 9:30; Mark 5:43). Once again, those who have been healed immediately disobey Him (Matthew 9:25–26). The two blind men who have just been given their sight by the Messiah went away from Jesus and spread His fame throughout the district. It's hard to know how they could keep such a secret from those who knew them; when blind men suddenly see, it's a hard thing to keep quiet.

Part of Jesus' reasons for these commands is to keep His fame and reputation as the Messiah from getting out of control. Christ was sent to accomplish a specific plan: which did not include raising an army (John 18:36). Rather, His purpose was to die for the sins of humanity (John 12:32–36). If the crowds grew too large and aggressive (John 6:15), it could alter Jesus' timetable. Still, God remained in full control of the timing and events of Jesus' life.