A new report from George Barna’s American Worldview Inventory 2025 reports that despite two-thirds of Americans identifying as Christian, only 11% of U.S. adults — and just 16% of self-identified Christians — believe in the doctrine of the Trinity. This Christian teaching, which defines God as Father, Son and Holy Spirit, appears increasingly misunderstood or ignored, according to the report.

The research highlights concerning trends: only 29% of Americans believe in the presence and power of the Holy Spirit, and among regular evangelical churchgoers, just 25% accept the full Trinitarian view of God. Even among those with a biblical worldview, only 62% affirm the Trinity.

Erosion of biblical understanding

Barna attributes this erosion of biblical understanding to cultural influences, noting that figures like Tucker Carlson, Joe Rogan and Bill Maher shape spiritual views more than many pastors. He also criticizes churches for failing to teach foundational theological principles.

This theological confusion has deep implications for families, churches and the nation, he warned. The American Worldview Inventory 2025 is part of an effort to analyze and strengthen biblical belief in America.

‘Deep concern’

Barna calls for churches and Christian leaders to renew their commitment to teaching core doctrines, emphasizing the need for a strong biblical worldview to counteract these trends.

“These findings highlight the growing need for the Church to rekindle its commitment to helping people truly know God and understand His nature,” Barna said in a news release. “The widespread dismissal of core biblical truths should stir a deep concern among those who care about the spiritual health of our nation.”

Barna serves as director of research at the Cultural Research Center at Arizona Christian University.

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EDITOR'S NOTE: This article was originally compiled and published by The Baptist Paper, with reporting from George Barna, professor and director of research of the Cultural Research Center at Arizona Christian University.

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