"The truth" was the short cut rank and file term in the 1950s and 1960s. Within the family, JWs were not mentioned. They said "the truth." The truth did not mean truth.falsehood but the organization name. I heard it thousands of times. When I was fed up when I was older, I had manu unspoken thoughts about "the truth."
Decades later I was ill and staying with my JW aunt and uncle. Foolishly, I talked about the Witnesses and said "whose truth" proven by whom? My aunt told me she never referred to "the truth." What bunk! I loved her so I started to wonder if I made it up. I was elated to see it here.