Saint Augustine (354–430 AD) did not have a strong command of Greek, particularly in his youth, but he did eventually acquire enough proficiency to consult Greek texts, such as the Septuagint and Greek commentators, as his career progressed. While he famously struggled with and hated learning the language as a child, leading to a lifelong limitation in his ability to read it fluently, he was not entirely ignorant of it.
John Calvin was an excellent Greek scholar who possessed a high proficiency in the original language of the New Testament. As a trained Renaissance humanist, he insisted on studying the scriptures in their original languages (ad fontes) and frequently consulted Greek texts for his commentaries and sermons. He could also read Hebrew.
The rapid decline in Church attendance in North America is widespread. There are about 3.5 million fewer Baptists attending church and Lutheran, Methodist, Presbyterian and Episcopal churches show continuing declines in attendance as well. Approximately 4,000 Protestant churches closed in the United States in 2024, according to a report from Lifeway Research, based on data analysis from 35 denominations. While thousands of new churches are planted annually, in 2024, closures outpaced openings by roughly 200, representing a continuing trend of decline for many older congregations. Those growing fastest are Jesus Christ of Latter Day Saints, Seventh Day Adventists, Pentecostals, and Non-Denominal churches although much of their "growth" is from those leaving denominations.