Please enjoy some open source research. Open since King James did a dig on some scriptures.
https://www.biblegateway.com/quicksearch/?qs_version=KJV&quicksearch=synagogue&begin=73&end=73
Ask yourself 2 questions.
1) do you believe the bible is the word of God? If no do not read on.
2) What group of people on earth at this time fit the description.
https://www.biblegateway.com/quicksearch/?qs_version=KJV&quicksearch=synagogue&begin=73&end=73