Thank you for sharing your dream with us. Please take everything that I share to the Holy Spirit as He Alone gives the accurate interpretation.
I feel that you have the interpretation of this vision and are perhaps looking for confirmation 🙂 . I also feel that I have pieces to the puzzle (if it is one for you) and what I share will be beneficial for you. The first thought that came to mind was “Which tribe of Israel is represented by the donkey?” and Did Jesus ride on a donkey for His triumphant entry? The answers are Issachar and Yes respectively. Perhaps God is saying that you or someone has laboured (donkey) long enough and it is time and season for your reward (Isaachar) . The reward is this flaming sword which for some reason made me think of the garden of Eden when the cherubims guarded Adam and Eve from re-entering Eden. However, I feel that the sword has more to do with the Sword of the Spirit, the rhema (Matthew 4:4 and Ephesians 6:17). Perhaps, you/someone has now be bestowed with a gift/reward-a spiritual gift of authority. This gift could be speaking in tongues or anyone along the prophetic, declarative spectrum. Perhaps, you’ve been able to see and hear. Now God wants you to “speak.”