In ancient times, the Bereans were the inhabitants of the city of Berea, also referred to as Beroea in the Bible.
According to the Book of Acts, Paul of Tarsus and Silas preached at the synagogue in Berea, and many of the people there believed.
[1] Historically, the Bereans (also called Beroeans, Barclayans or Barclayites) were a Protestant sect following former Scottish Presbyterian minister John Barclay (1734–1798).
A new Protestant Christian group began in the 1850s in the United States under the tutelage of Dr. John Thomas.
They deny the Doctrine of the Trinity, a central tenet of orthodox Christianity, and this refusal to recognize the triune nature of God has resulted in a major impasse between the Christadelphians and the Protestant, Catholic, and Eastern Orthodox churches.