He married and moved to Poland in 1927 where he lived with his wife's parents during her pregnancy and played a part in trying to rescue European Jews from the Nazi plan to eliminate them as Germany conquered the countries of Europe during the 1939-1945 Second World War.
The hallmark of the organization was Isaiah's prescription that: My house will become a house of prayer for all peoples ...This is the same verse that Herbert W. Armstrong used for his reason to build the Ambassador Auditorium in Pasadena, California, and Armstrong once announced a plan to assist in the building of a Jewish/Christian/Islamic center at Mount Sinai with the blessings of both Egyptian and Israeli leaders.
He was also the long-time editor of the United Nations Correspondents Association's quarterly newsletter and was the author of the 1986 biography "Pastor Charles Taze Russell: An Early American Christian Zionist."
The book detailed the pro-Zionism writings and sermons of the founder of the Watch Tower Bible and Tract Society, better known as the Jehovah's Witness movement.
Notably, Horowitz also wrote Thirty-Three Candles, an autobiographical book detailing his involvement with Messianic claimant Moses Guibbory and famed radio announcer Boake Carter.