Hello, and welcome back to Nations 4 Jesus. Today I want to talk about something that challenged me deeply and might make some of you uncomfortable—including me! It's about cities. Big cities. Megacities. The crowded, noisy, dirty, overwhelming urban centers that many of us would rather avoid.
I'll be honest—I'm not naturally a city person. I grew up on the outskirts of Los Angeles, and our family lived in Seoul, South Korea—the heart of what was then the world's fifth-largest city. I don't find cities exciting and pulsing with energy like some people do. Instead, I find them crowded, dirty, loud, sometimes crime-ridden, and—did I mention crowded?
But I'm asking God to change my outlook, especially after studying an article by missiologist Roger S. Greenway called "The Challenge of the Cities." What he says is so important that I need to share it with you, even though it convicts me. Because here's the truth: Whether we like cities or not, that's where God is moving, and that's where the harvest is waiting.
[The reality - cities are the new frontier]
Greenway writes: "Cities are the new frontier of Christian missions. Because of their size, influence, diversity, and needs, cities present enormous challenges. To neglect cities would be a strategic mistake, because, as cities go, the world goes."
Think about that! As cities go, the world goes. Cities are the centers of political power, economic activity, communication, scientific research, academic instruction, and moral and religious influences. Whatever happens in cities affects entire nations. When Christ's kingdom advances in cities, the number of people worshiping and serving the true God multiplies exponentially.
[The migration - largest in human history]
Over the last several decades, the world has witnessed the largest population movement in history—migration from rural areas to cities. When Greenway wrote in the 1990s, this was already happening. But it's accelerated dramatically since then.
In America, we think we have large cities—New York, Los Angeles, Chicago. But we're only the tip of the iceberg! Let me give you some statistics about cities in 2025 that will blow your mind.
[The megacities - 2025 statistics]
According to current data, there are now over 40 megacities—cities with populations exceeding 10 million people. Here are some of the largest:
Jakarata, Indonesia with 42 million recently surpassed Dhaka, Bangladesh with 37 million and Tokyo, Japan at about 33 million people. New Delhi, India is close behind at 30 million. Shanghai, China has 29 million. Guangzhou, China, where we finalized our oldest daughter’s adoption, has 37 million and to round out the top ten…Cairo, Egypt; Manila,. Philippines, Kolkata, India and Seoul, South Korea.
The next largest are - Karachi, Pakistan, Beijing, China, Sao Paulo, Brazil, Bangkok, China and then we finally get to a US city - New York with about 21.8 million. By 2030, the UN projects there will be 48 megacities.
[The poverty and suffering - unprecedented need]
Now here's the heartbreaking part. As Greenway writes: "Some of the worst suffering is found among people who have recently arrived in cities." The slums of New York and Los Angeles—as difficult as they are—pale in comparison to what you find in Dhaka, Karachi, New Delhi or Kolkata.
We're talking about massive urban slums where millions live in grinding poverty, without adequate water, sanitation, healthcare, or education. Children grow up in conditions we can barely imagine. Disease, crime, exploitation, hopelessness—these are daily realities for hundreds of millions of urban poor.
And these numbers are growing every single day as more people migrate from rural areas hoping for a better life in the city.
[The opportunity - unprecedented openness]
But here's where it gets really interesting—and this is what convicted me. Greenway writes: "Yet, God is and can do tremendous works in these cities if we will only walk in obedience to where He is calling the Church, because there is an openness to the Gospel in the cities."
Listen carefully to this insight: "As a general rule, people who are recently dislocated (which describes a large part of megacities where the population continues to grow as people from the country move to the city), and are experiencing major changes in their lives, are more open to the Gospel than they were before."
Think about it! When people move to a new city, they're uprooted from their traditional communities, their family networks, their religious structures. Everything is new and overwhelming. They're searching for meaning, for community, for hope. And in that searching, they're more open to new ideas—including the Gospel!
[God's strategy - bringing people to the Gospel]
This is brilliant! Greenway writes: "God is behind the migration of masses of people to the cities, allowing the people He loves to journey to a place where they will be more open to hearing about Him, if only people will tell them."
God is orchestrating this! He's creating new opportunities for spreading the Gospel among unreached people coming from remote towns and villages. Through urbanization, God is drawing people from every race, tribe, and language to places where they can be reached with the Gospel.
[The missionary advantage - multiple people groups in one place]
And here's what really hit me—and this changed my entire perspective on urban missions. Greenway writes: "Missionaries, instead of going to a remote rural location to reach an unreached people group, can go to cities where there are representatives from thousands of people groups, representatives that because of their difficult lifestyles are more open to the Gospel than they might have been while living in their rural homes."
Do you see the genius of this? Instead of a missionary spending years learning a language, trekking to a remote village, and trying to reach one isolated people group, they can go to a megacity and find representatives from hundreds or even thousands of people groups all in one place! And these people are more open to the Gospel than they would be back in their villages!
In cities like Dubai, London, New York, Singapore, or Bangkok, you can meet people from almost every nation on earth. A missionary in one city can potentially reach dozens of unreached people groups!
[The challenge - we need workers in cities]
But here's the problem, and Greenway doesn't sugarcoat it: "But it takes sacrifice on many believer's hearts to go to the cities. Traditionally, most mission work was done in rural areas. In the past, that made sense because most people lived in rural communities. But the biggest challenge is now in cities, and there we find a shortage of workers."
Why the shortage? "Many missionaries are so disturbed by the noise and traffic in cities, the pollution, social problems, crime and crowded housing, that they prefer working in rural areas."
This convicted me! I'm one of those people who prefers rural areas. I'd much rather minister in a quiet village than a chaotic city. But Greenway challenges us: "Unreached villages certainly need to hear the Gospel. But in view of the masses of unsaved and unchurched people in cities, more attention must be given to urban centers."
[Biblical precedent - God's heart for cities]
And this isn't just practical strategy—it's biblical! God's heart for cities runs throughout Scripture. Urban missions began with Jonah being sent to Nineveh, one of the great cities of the ancient world. Much of Christ's ministry was done in the poor urban conditions of Jerusalem. And the missionary strategy of Paul was completely urban!
Paul didn't go to remote villages. He went to cities—Antioch, Ephesus, Corinth, Rome. He planted churches in urban centers, knowing that the Gospel would spread from those cities to the surrounding regions.
[The question - will we go where we're needed?]
Greenway's challenge is pointed: "Our response should not depend on whether we prefer to live in cities or not. As it was for Jonah, and no doubt for Paul, the question is whether we will go where workers are needed and where God wants us to go."
That's the question for each of us. Not "Do I like cities?" but "Is God calling me there? Are workers needed there?" And the answer to that second question is an overwhelming yes!
[Current statistics - the urgency today]
Let me give you some updated statistics that show the urgency. As of 2025:
- About 57% of the world's population lives in urban areas—that's 4.4 billion people
- By 2050, that number is projected to reach 68%—about 6.7 billion people
- 90% of this urban growth is happening in Asia and Africa
- About 1 billion people live in urban slums
- Many megacities have less than 2% evangelical Christian population
Think about Dhaka, Bangladesh—42 million people, and it's overwhelmingly Muslim with only a tiny Christian minority. Or New Delhi, India—30 million people, mostly Hindu, with vast slums where millions have never heard the Gospel. Or Lagos, Nigeria—21 million people, growing so fast that infrastructure can't keep up, with both Christian and Muslim populations but also millions who've never heard a clear Gospel presentation.
These are fields white for harvest! And they're not in remote jungles—they're in cities with airports, where you can get a Starbucks, where internet is available. Yet they're desperately unreached!
[Practical application - what can we do?]
So what do we do with this information? Let me give you five practical steps.
First, change your perspective on cities. Stop seeing them as places to avoid and start seeing them as strategic mission fields. Ask God to give you His heart for cities, for the masses of people living there in physical and spiritual poverty.
Second, pray for urban missions. Pray for missionaries serving in megacities. Pray for church planters in slums. Pray for evangelists reaching multiple people groups in one city. Pray that God would raise up more workers willing to go to cities.
Third, support urban missions financially. There are great organizations doing urban church planting, slum ministry, and outreach to internationals in global cities. Give to support this work!
Fourth, consider going on a short-term mission trip to a megacity. Experience urban missions firsthand. You might be surprised—God might call you to long-term urban ministry!
Fifth, if you live in or near a city, look around! Your city probably has immigrants from dozens of nations. You can do cross-cultural missions without leaving home! Reach out to refugee communities, international students, immigrant neighborhoods. The nations have come to our cities—will we reach them?
[Closing prayer]
Let me pray:
Thank you for joining me today. I hope this has challenged you as much as it challenged me. The cities are God's new frontier for missions—will we join Him there?
Until next time, remember—keep your eyes on the nations, and don't forget that many of those nations are now gathered in cities!