10 Years revealing secrets because there is no excuse for secrecy in religion – w1997 June 1; Dan 2:47; Matt 10:26; Mark 4:22; Luke 12:2; Acts 4:19, 20.
Back in a Watch Tower in 1889, it was said raisin juice was acceptable for use as a Memorial emblem. Here raisin juice comes up again, only now it is unacceptable. Raisin juice was acceptable for a long time.
-Download Watchtower, February 1, 1935 (Bound Volume) page 47