Tu Bi-Shevat, the New Year for Trees or Arbor Day, was the cut-off date for tithing regarding the production of orchards, determined by the rainy seasons within Israel. Evert W. van de Poll, in his book, Messianic Jews and their Holiday Practice: History, Analysis and Gentile Christian Interest, interprets the spiritual significance of the holiday as signifying “the goodness of God in creation; for others [Messianic Jews] it signifies the need for believers in Jesus to be like a tree that bears abundant fruit”.
Texas State University Libraries’ offers a number of ebooks and online encyclopedias filled with all sorts of information. The information concerning Tu Bi-Shevat was found in The New Encyclopedia of Judaism available through Credo Reference, the Encyclopaedia Judaica from Gale Encyclopedias, and Messianic Jews and Their Holiday Practice supplied by eBook Central. For more information on ebooks, digital reference books, or obscure Jewish holidays … Come In and Find Out More.
New year for trees. (2002). In G. Wigoder, F. Skolnik, & S. Himelstein (Eds.), The new encyclopedia of Judaism (2nd ed.). New York, NY: New York University Press. Retrieved from http://libproxy.txstate.edu/login?url=http://search.credoreference.com/content/entry/nyu pencyjud/new_year_for_trees/0?institutionId=1143
van, D. P. E. W. (2015). Messianic jews and their holiday practice : history, analysis and gentile christian interest. Retrieved from https://ebookcentral-proquest-com.libproxy.txstate.edu
Ydit, M. (2007). Tu Bi-Shevat. In M. Berenbaum & F. Skolnik (Eds.), Encyclopaedia Judaica (2nd ed., Vol. 20, p. 167). Detroit: Macmillan Reference USA. Retrieved from http://link.galegroup.com/apps/doc/CX2587520083/GVRL.encyclopedias?u=txshracd25 50&sid=GVRL.encyclopedias&xid=26a1077f