Koine Greek is an ancient form of the Greek language that emerged around the 4th century BCE and was widely spoken until about the 4th century CE. It developed after the conquests of Alexander the Great, which spread Greek culture and language across a vast region. Koine Greek served as a common language for people from different backgrounds, facilitating trade, communication, and cultural exchange. This dialect is particularly significant because it is the language of the New Testament and many early Christian writings. Its simplified grammar and vocabulary made it accessible to a broader audience, allowing for the spread of ideas and beliefs throughout the Mediterranean and beyond.