Hello there!
Jesus' disciples spread the message of Christianity by preaching.
Matthew 24: 14 "And this good news of the Kingdom will be preached in all the inhabited earth for a witness to all the nations, and then the end will come."
Jesus used to preach as well. Mark 4:2 "And he (Jesus) began to teach them many things with illustrations, and while he was teaching, he said to them:" (Continue read verse 3, and so on...to learn more about what he told them).
Jesus's disciples for the passed centuries are doing the same thing. Spreading the message of Christianity isn't easy. It is a tough assignment. Just like first disciples....like Peter, Apostle Paul etc..people used to go against them, and stopping them from preaching. However, with the help of God and his son, they were able to continue preaching even in the worst situations.
Not all religions preach. As you can see, Jehovah's Witnesses are one of the disciples who are doing the assignment Jesus gave his disciples in Matthew 24: 14.
I hope this helps! As always, it is my pleasure to help students like you.
