Moses compares Yahweh's anger to someone starting a fire to destroy things. This can be stated in active form. To kindle anger is a metaphor for becoming very angry. Alternate translation: "Yahweh your God will kindle his anger" or "Yahweh your God will become very angry" (See: [[rc://en/ta/man/jit/figs-activepassive]] and [[rc://en/ta/man/jit/figs-metaphor]])