 He served briefly as chair of the Ellen G. White Estate board of trustees in 1952, and gave two presentations about Ellen G. White at the 1952 Bible Conference.He authored "Believe His Prophets", an apologetic for the prophetic gift of Ellen White.After his death, the Rebok estate provided a gift to the Seventh-day Adventist Church; 70% of which helped establish a library at the church's world headquarters and 30% to Adventist World Radio - Asia, for an endowment fund.