The trash man’s house sits atop a steep street in a poor Bogota neighborhood. Not one thing about it looks special. Yet the unassuming abode in Colombia’s capital is home to a free library of 25,000 books—discarded literature that Jose Alberto Gutierrez collected to share with poor children in his community.

Local kids crowd into the house during weekend “library hours.” Prowling through every room, each packed with books, the children recognize the humble home is more than Señor Jose’s house—it’s a priceless treasury.

The same is true for every follower of Christ. We are made of humble clay—marred by cracks and…