The answer is: Leprosy

Num 12:10

Miriam, the sister of Moses, found herself in quite a predicament. When she spoke out against Moses over his marriage to a Cushite woman, she wasn't just voicing a personal grudge; this moment highlighted deeper issues regarding leadership, authority, and the struggle with human behavior in the face of divine guidance. It's intriguing to see how even revered figures faced wrath with harsh consequences for their words and actions.

In her punishment of leprosy—exile to the outside of the camp—Miriam paid a high price. However, this isn't simply a story of judgment; it offers a window into the dynamics of family among leaders and the repercussions of stepping out of one's bounds. The image of her "white as snow" skin serves as a stark reminder of how humans can falter regardless of their pivotal roles. Interestingly, leprosy not only represented a physical ailment but served as a metaphor for the consequences of sin and isolation from community.

What’s noteworthy is Moses' reaction: he interceded for her, pleading for her healing. This lends a deeper layer to Moses' character—a compassionate leader at heart, even in the glare of harsh wilderness punishments. It echoes a recurring biblical theme: the idea of reconciliation and mercy coexisting with justice. While Miriam's initial critiques held weight, this paradigm reminds us of the complexity in leader-ship, accountability, and sibling bonds framed under divine principles.