And it came to pass on a certain day, as he was teaching, that there were Pharisees and doctors of the law sitting by, which were come out of every town of Galilee, and Judaea, and Jerusalem: and the power of the Lord was present to heal them. - Luke 5:17, KJV
Notice the key wording: “the power of the Lord was present to heal them...”
The atmosphere was set.
While I believe that God’s healing power can be taken anywhere at any time, I also know that setting the atmosphere for the Lord to move is key.
Jesus, though He traveled through villages and towns, traveled to synagogues.
Jesus traveled through all the towns and villages of that area, teaching in the synagogues and announcing the Good News about the Kingdom. And he healed every kind of disease and illness. - Matthew 9:35, NLT
Jesus’s ministry is commonly misunderstood in this regard: people imagine Him as some wanderer with no structure, who just hung out in the streets and performed miracles.
In fact, Jesus was organized and intentional. He focused on teaching in the synagogues.
There, He would set the atmosphere of faith. He would teach the Word and then perform miracles.
There’s nothing wrong with taking our message “outside the four walls of the church”, as long as we recognize that those “four walls” aren’t wrong - they can, at times, be useful.
It is important and spiritual to set aside a place for the purposes of God. It is effective to minister in an atmosphere that is set.
In a set atmosphere, distraction is removed and the people become focused on the Word. And when they are focused on the Word, their faith rises. And when their faith rises, miracles happen.
To set the atmosphere, simply remove distraction and then build faith with the Word. That’s what Jesus did. The healing anointing is intensified in an atmosphere set aside for and dominated by the Holy Spirit.