The ministry of Jesus spread through people sharing their personal experiences of their encounter with the Messiah. Even today, in a world filled with countless religions and distractions, the work of God continues through the personal testimonies of people who have experienced Christ in their lives.
In rejecting Jesus as the Messianic King, the Jewish leaders proved that they did not understand the very scriptures they were reading and teaching others. Satan had blinded their eyes in the name of religion and in their efforts to hold on to their traditions, they failed to accept the greatest Gift from God. Jesus wanted to highlight His rejection to prepare the disciples for the persecution that was coming their way.
The Church scatters and the Word is spread to the ends of the earth.