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What We’ll Cover

John Mark Eager serves as Executive Director of The Mailbox Club, a ministry founded by his father to help children grow in their understanding of the gospel through long-term discipleship. Although John Mark trusted Christ as a child, a season of spiritual renewal during his school years deepened his walk with the Lord and gave him a lasting burden for missions. Over the past several decades, God has used that calling to expand The Mailbox Club far beyond its original model, opening doors to partner with churches and local Believers around the world.

In this conversation, John Mark shares how God has grown the ministry from reaching millions of children to discipling more than 17 million annually across 110 countries, while keeping the focus on evangelism, discipleship, and stewardship. He discusses the importance of empowering indigenous leaders, investing in young people who are discipling the next generation, and refusing to limit what God can do through ordinary Believers. Along the way, he offers practical wisdom on leadership, generosity, and trusting God to provide for opportunities that seem far beyond human capacity.

Listen to discover how God is using children, youth, and local churches to advance the gospel in some of the world’s most strategic and least reached places.

Major Topics Include:

• Embracing a child-focused Great Commission
• Pairing evangelism with long-term discipleship
• Empowering indigenous leaders for Kingdom growth
• Releasing authority and trusting capable teams
• Refusing to limit what God can do
• Balancing data-driven stewardship with Spirit-led dependence
• Developing youth leaders through active ministry
• Building scalable systems without losing mission focus
• Prioritizing unreached children and frontier regions
• Involving families and children in ministry exposure

Quotes to Remember

• “The most unreached people group is children.”
• “We celebrate what God’s done in the past, but we’re forward thinking and we push ourselves and each other.”
• “Children make great missionaries. Children are the most responsive to the gospel.”
• “We really can’t have a conversation about world evangelization without talking about children.”
• “I think we can track numbers and pursue excellence in stewardship and be led by the Holy Spirit. I don’t think those are competing ideas.”
• “The Mailbox Club is just a vehicle for the gospel.”
• “I think we’re supposed to reach kids. I think we’re supposed to reach kids anywhere and everywhere for Christ.”
• “I’m ultimately serving Christ. And that’s the highest honor we can have, to be a bondservant of Jesus Christ.”
• “God delights in impossibilities.”
• “I do believe in simple faith that God isn’t bringing these opportunities just to frustrate us.”
• “My job is just to advocate on behalf of kids.”
• “We’re stewards of everything we have to reach the world for Christ.”
• “If He can use me, He can use anybody.”

Links from the Show

• John Mark Eager, Executive Director of The Mailbox Club (see our past interview here)
• Child Evangelism Fellowship
• Operation Christmas Child, the shoebox ministry of The Samaritan’s Purse
• ROI Ministry (see our interview with founder, Tim Barker)
• MacLellan Foundation (see our interview with Director of Generosity, John Cortines)

Bible References from the Show

Psalm 71:15-16 | God’s Boundless Salvation

“My mouth will tell of your righteous acts, of your deeds of salvation all the day, for their number is past my knowledge. With the mighty deeds of the Lord God I will come; I will remind them of your righteousness, yours alone.”

Matthew 28: 16-20 | The Great Commission

Matthew 9:36-38 | The Laborers Are Few

“When he saw the crowds, he had compassion for them, because they were harassed and helpless, like sheep without a shepherd. Then he said to his disciples, ‘The harvest is plentiful, but the laborers are few; therefore pray earnestly to the Lord of the harvest to send out laborers into his harvest.’” 

Matthew 19:14 | Jesus Loves the Little Children

“But Jesus said, ‘Let the little children come to me and do not hinder them, for to such belongs the kingdom of heaven.’”

John 14:12-14 | Greater Works

 “Truly, truly, I say to you, whoever believes in me will also do the works that I do; and greater works than these will he do, because I am going to the Father. Whatever you ask in my name, this I will do, that the Father may be glorified in the Son. If you ask me[a]anything in my name, I will do it.

Acts 2:41 | Three Thousand Added

“So those who received his word were baptized, and there were added that day about three thousand souls.”

1 Corinthians 9:22 | All Things to All People

“I have become all things to all people, that by all means I might save some.”

1 Corinthians 15:31 | I Die Every Day

“I protest, brothers, by my pride in you, which I have in Christ Jesus our Lord, I die every day!”

Take A Step Deeper

But sometimes these stories can leave us thinking, “What’s that next step look like for me?”

That’s exactly why we’ve launched a whole new podcast called Applied Generosity which explores the full landscape of the generous life across 7 different dimensions of generosity.

Applied Generosity helps make sense of the hundreds of stories we’ve shared on the Finish Line Podcast to help you find that best next step.

If you’ve been inspired by these stories and want to take things to the next level, check out Applied Generosity anywhere you listen to podcasts or at appliedgenerosity.com.