What does Mark 5:40 mean?
When Jesus insists that Jairus' daughter is not dead but sleeping, "they" mock Him. Who exactly is meant by "they" is undefined in Mark, but Luke 8:52–53 identifies the individuals as the professional mourners. "Laughed" is from the Greek root word katagelao which means to deride. If the crowd had really cared about the girl, they might be hopeful or even angry, but by treating Jesus like a fool, they show that they see this event as just another day at work.According to Matthew 9:25, the professional mourners are inside the house. "Putting [them] out" is from the Greek root word ekballo which means to cast someone out forcefully. In Mark 5:36, Jesus tells Jairus, "Do not fear, only believe." Jesus gives Jairus reason to hope. When faced with a crowd that threatens to kill that hope, Jesus responds by throwing the crowd out.
There is a time to wade into the sea of a faith-testing, hope-squashing, lost world and boldly preach the gospel of Christ. However, when we're in a spiritually vulnerable frame of mind, that is probably not what we need. The church is designed so that the members can encourage each other (Hebrews 10:25), love each other (1 John 4:12), and show kindness and compassion (Ephesians 4:32). God does not intend us to always be in the thick of spiritual battle. We also need times of rest and encouragement (Mark 6:31; 1 Thessalonians 5:11). If that means avoiding draining people for a time, that is perfectly fine.