"But when they see the Scriptures and hear them in their own mother tongue," says Lange, "they believe them because they've seen them and heard them."

A radio programs course is another way SIL and its partners help Quechuas hear God's Word.

"Everybody [in South Peru] listens to the radio," says Lange. "It's so important to teach these volunteers how to construct a basic program and an outline, and to follow it, rather than just opening their Bible and improvising."

While Lange enjoys teaching the two courses, he wants to see Quechuas become trainers and also create their own programming resources.

"I'm training some men how to develop materials designed to change both the spiritual and the physical man, in the areas of health, agriculture and in spiritual life.

"I'm helping them dream about what is really going to have a great impact on the Quechuas, that we can record and distribute through radio."

His dream includes helping Quechuas produce radio "soap operas," a popular format that could be used to model strong Christian families. All of his dreams are driven by a sense of urgency: SIL will complete most of its work in Peru by 2010.

Before then, Lange hopes to see at least two Quechuas equipped as trainers for each course.

"I'm very happy," Lange says, "because even though there's a lot of pressure to hand off everything, God has sent along some very capable people."