1791: 7 in Hebrew and Indo-European

The Hebrew word for 7 is 'sheva' (שבע), which is very close to other Indo-European words, including, 'seven', 'septem', (Latin) 'hepta' (Greek), or 'sextan' (Gaulish), and no one really knows why. It could be that it is just random, but there is also similarity between words for 6 two, even though Hebrew is not related to Indo-European languages. It could be borrowed, for instance, from Hittite, in this case 'šipta-', or those languages could have borrowed from Hebrew, but either way the similarity has been the topic of discussion for a good long while.

For more on 7 in the Bible, check out: https://youtu.be/4TkSQGGPvOI