
Extract the answer to the question from the following context.
Question: What is a commonality among Christians?
Context: A wide range of beliefs and practices is found across the world among those who call themselves Christian. Denominations and sects disagree on a common definition of "Christianity". For example, Timothy Beal notes the disparity of beliefs among those who identify as Christians in the United States as follows:

disagree on a common definition of "Christianity"
