"Yet the chief cupbearer did not remember Joseph, but forgot him."
While in prison (wrongfully so), Joseph interpreted the dream of a fellow prisoner, Pharoah's cupbearer. In three days the cupbearer would be restored to his former position to Pharoah. The scriptures tell us that Joseph asked the cupbearer to remember him to Pharoah for his correct dream interpretation. (Sort of like a personal recommendation.) You would think that the cupbearer would remember the young man and mention him to Pharoah, but in fact he forgot Joseph. In fact, it wasn't until two "full years" later that the cupbearer brought up Joseph to Pharoah; when the ruler was searching for someone who could correctly interpret his dream. "Then the chief cupbearer said to Pharaoh, “Today I am reminded of my shortcoming" (Genesis 41:9). Have you ever put your trust in another human being only to have them disappoint you? This happened to Joseph over and over again. First his brothers, then Potiphar, then the cupbearer. . .poor Joseph. We may learn from Joseph's story that the only one we can truly trust all the time is God Almighty Himself. "Joseph perhaps depended too much upon his interest in the chief butler, and promised himself too much from him; he learned by his disappointment to trust in God only. We cannot expect too little from man nor too much from God." (Matthew Henry)