Reading through the comments I see people from all over the world offering insights about various places. Then I realised all the comments here are in English. There must be an equivalent for languages continuously spoken over time.
Its predecessor: Anglo Saxon is even more distant from it. Try to read the passages here: https://en.wikipedia.org/wiki/Old_English#Beowulf
Latin (as an artificially conserved language) has not changed that much since Roman times, but it isn't a language that is actively used in everyday life -- so you cannot claim it is: "continuously spoken over time".
Hebrew and Arabic could be interesting cases -- maybe someone more knowledgeable than me can chime in on these... But I assume ancient Hebrew and Arabic are also not mutually intelligible with the corresponding languages today.
Hebrew is an unusual case because, like Latin, it was mostly a dead language that for centuries only continued to be used in religious and a few other contexts. It was revived in the 19th century. Because of its long period of cryostasis the parts that were preserved probably haven't changed that much, although necessarily it's expanded greatly into a living language.
Arabic is divided into "proper, classical" Arabic which is used for religious purpose (and maybe some other "official" things), a bit like Latin in the middle ages; and various mostly unintelligible dialects used day to day.
If I remember correctly, modern Hebrew is pretty much the same as old Hebrew, with various additions to fit the current world. It's somewhat artificial in that it wasn't really spoken before, and was the chosen as the official language in the early 20th century. It's like if someone decided nowadays to use Latin as the official language.
https://www.holidify.com/pages/oldest-languages-of-world-365...