https://wol.jw.org/en/wol/d/r1/lp-e/1101993012
Would God Restore the Jews to Palestine?
The Bible Students were well aware of the many prophecies of restoration that were delivered to ancient Israel by God’s prophets. (Jer. 30:18; 31:8-10; Amos 9:14, 15; Rom. 11:25, 26) Down till 1932, they understood these to apply specifically to the natural Jews. Thus, they believed that God would show Israel favor again, gradually restoring the Jews to Palestine, opening their eyes to the truth regarding Jesus as Ransomer and Messianic King, and using them as an agency for extending blessings to all nations. With this understanding, Brother Russell spoke to large Jewish audiences in New York as well as in Europe on the subject “Zionism in Prophecy,” and Brother Rutherford, in 1925, wrote the book Comfort for the Jews.
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But then persecution of Jews began in Germany and Brother Rutherford lost his faith in prophecies that Jews would get a homeland in Palestine. He could have waited to dismiss this because just a few years later the Jewish homeland was established.