No pew? No problem. Online church is revitalizing congregations.

After spending five years in Vietnam for her husband’s work assignment, Beth Schultz looked forward to reconnecting with church life in 2016 when her family returned to Portland, Oregon. But she easily gets overwhelmed in groups, she says, and she didn’t feel a warm welcome at her church. She tried practicing faith independently, but habits were hard to sustain with no community support.

All that changed last year, however, when joining another church became an option – a church 2,000 miles away.

Ms. Schultz began worshipping at Wilshire Baptist...