Under his leadership, Mariners Church has grown to seven locations in Southern California, expanded its digital and online offerings (including virtual worship experiences and small groups), and brought worship services to the Orange County Rescue Mission, Orangewood Children’s Home, Sunburst Youth Academy, senior living facilities, and prisons throughout North America.

[5] The church's membership has been described as "drawn from two affluent, predominately white communities, [and having] a generous sprinkling of the financially successful and socially prominent.

[10] Mariners Church began as a small group of Christians who met for Bible studies in homes in the Newport Beach area starting in 1963.

Finally, the church purchased another adjoining property from the Irvine Company for $18 million, expanding the campus by 18 acres (73,000 m2) to reach its current size.

The church built and opened Port Mariners children’s building in June 2005 and the new Worship Center, bookstore and café in November 2005 at a cost of approximately $35 million.

Since then, Mariners Hosted Here has grown, bringing worship services to traditionally closed facilities like senior living homes, mental health treatment centers, prisons, and more.

[15] The church was sued, and defended itself successfully through a long-running series of appeals on First Amendment grounds, saying that 'an admission of homosexuality could be interpreted as "moral and sexual actions that are a sin."'

In 2013, politically conservative church members were offended when Beshore traveled to Washington, DC, to lobby for a pathway to citizenship for undocumented immigrants.