Read Luke 13.
A few weeks ago, workers in China built a new hospital. The hospital was needed to quarantine and treat victims of COVID-19 which was spreading rapidly.
Construction on the hospital took 10 days. The time-lapse video of it being built is very impressive.* It’s incredible how rapidly they were able to built it.
God’s kingdom doesn’t work like that. God does not build his kingdom rapidly. Instead, Jesus said it was like a mustard seed that grew into a tree (v. 19) or yeast that permeated a huge lump of dough (v. 21).
Both of these things happen slowly, imperceptibly. You can plant a mustard seed and look at it everyday. You will see that it has changed over time but you can’t see it changing in time. The growth is happening too slowly to see in real time, but it is happening.
So it is with the gospel. There have been times in church history when thousands came to Christ at the same time (Acts 2:41) but every salvation happens individually and usually those individuals believe alone or in a small cluster. Yet, everyday, all over the world, people are being saved. The church worldwide grows a little bit all the time and, when Jesus returns, we’ll enter the kingdom and see how that little mustard seed has become a massive tree.
If you’ve lost faith in God’s saving power, take heart. The kingdom of God is not a hastily assembled hospital built by people forced to work around the clock by their tyrannical government.
Instead, it is a tree, growing slowly but constantly. And you and I contribute to that growth as we share the gospel message with others.