The Greek verb diakōluō means to prevent, hinder forcefully, or restrain — to thoroughly obstruct. It appears only once in the New Testament, in Matthew 3:14, where John the Baptist 'tried to prevent' Jesus from being baptized: 'I need to be baptized by you, and do you come to me?'
John's attempt to prevent Christ's baptism reveals both his profound theological insight and his misunderstanding of Jesus's mission. He correctly perceived that Jesus was the Lamb of God who had no need of a repentance baptism. Yet Jesus overruled the diakōluō, saying 'it is proper for us to fulfill all righteousness.' Jesus identified with sinners in baptism — not because He needed cleansing but because He was taking their place. The one who tries to stop God's redemptive plan, even for good reasons, must step aside. This single use of diakōluō captures the moment when human religious logic meets divine redemptive necessity — and divine necessity wins.