Bart Millard remembers the first time he realized I Can Only Imagine was a hit. Nearly two years after his band, MercyMe, released the Christian song as a single in 2001, he got a call from a friend, ...

Earlier this year, 19-year-old Alex Yurkiv was killed in a motorcycle accident in Australia. His name isn't well-known, but he co-wrote a Christian song that's been played more than 30 million times.

Believers expect to hear worship music played from the pulpit. But, nowadays, contemporary Christian tunes are finding an even bigger stage: social media. Another prominent Christian artist, Lauren ...