Jesus called his twelve disciples

 Matthew 10:1-15

Jesus called his twelve disciples to him and gave them authority to drive out impure spirits and to heal every disease and sickness.

Do not get any gold or silver or copper to take with you in your belts—Whatever town or village you enter, search there for some worthy person and stay at their house until you leave. As you enter the home, give it your greeting. If the home is deserving, let your peace rest on it; if it is not, let your peace return to you. If anyone will not welcome you or listen to your words, leave that home or town and shake the dust off your feet. Truly I tell you, it will be more bearable for Sodom and Gomorrah on the day of judgment than for that town.

The word apostle means messenger and the task of spreading the word about Jesus would rest with them after his death.

Now, having called them, he sends them our for the first time, with his own authority to heal. He gives them their instructions and warns them of the king of reception they are likely to get, both now and in the future. They are to expect hardship, to trust in God's care, and to fear no one.

Why?

Jesus called twelve disciples and gives them authority as the messenger of the gospel. They have the same authority to drive out the impure spirits and to heal every disease. This is the authority we like either. But this is the tool, the mission is to call people to come to Jesus to release their sins.

Because of this authority is blessing the people who welcome them, so the peace and greeting is deserved to them. If they rejected them, they will receive judgment for their own sins.

Some people reject the gospel, some people accept the gospel. It is the work of the Lord and their mind. To be a Christian, our mission is to let people know Jesus is the Lord and who is the fountain of blessing.

How?

Go and be a messenger to tell others the good news of Jesus Christ.