"Joe Biden's rabbi on his connection to Jews, leadership and Israel"
https://jpost.com/jerusalem-report/the-delaware-way-joe-bidens-connection-to-jews-leadership-and-israel-656754
https://archive.vn/TYiNx
"Meet Biden’s first rabbi, Rabbi Leonard Gewirtz"
https://forward.com/community/462602/meet-bidens-first-rabbi-rabbi-leonard-gewirtz/
https://archive.vn/6ueVR
"Joe Biden blessed by Delaware rabbi before White House inauguration"
https://jpost.com/diaspora/joe-biden-blessed-by-delaware-rabbi-before-white-house-inauguration-656019
https://archive.vn/hXv3u
In 2013, Biden had a Jewish Sukkah built at his home, by CHABAD
https://obamawhitehouse.archives.gov/realitycheck/blog/2013/09/25/first-vice-presidential-sukkah
https://archive.vn/dQoWU
"On the holiday of Sukkot, Jewish people spend time in the sukkah."
https://www.chabad.org/library/article_cdo/aid/609535/jewish/What-Is-a-Sukkah.htm
https://archive.vn/wU2dK