Here are some resources for debunking the 607 / 1914 Dates
Articles:
https://beroeans.net/2019/12/02/is-the-governing-body-knowingly-deceiving-us-over-607-b-c-e-part-1/
https://beroeans.net/2020/02/09/is-the-governing-body-knowingly-deceiving-us-over-607-bce-part-2/...