This imagery is used to signify the beginning of a new vision. See how you translated this idea in [Revelation 4:1](../04/01.md) and [Revelation 11:19](../11/19.md) and [Revelation 15:5](../15/05.md).
Here "justice" refers to what is right. Alternate translation: "He judges all people and wages war according to what is right" (See: [[rc://en/ta/man/jit/figs-explicit]])