Giving testimony is traditionally read as the need to put your experience on record and have it believed, often about something you have kept quiet for a long time.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.