The answer is: Leprosy

Num 12:9-10

In Numbers 12, when Miriam spoke out against Moses, the consequences were severe, and it serves as a poignant reminder of the dynamics within leadership and family. God struck Miriam with leprosy, a condition that carried heavy social and spiritual implications in ancient Israelite society. Leprosy wasn't just a physical ailment; it signified cleanliness and purity. Those afflicted were often ostracized, living outside the community.

The fascinating aspect is how healing mirrors human relationships and restoration. Once Aaron pleads for Miriam's healing, God honors his request after a week's isolation. This detail hints at the compassion and mercy underlying divine judgment. Moreover, everything we know about Miriam reinforces her role as a leader and protector, which adds depth to the story. She triumphantly led women in celebration after the crossing of the Sea of Reeds, emphasizing her importance in the Israelite narrative.

Also noteworthy is the image of leprosy throughout the Bible. It appears in the lives of others like Naaman or King Uzziah, representing different themes of authority and vulnerability. There's even an echo of moral cleanliness tied closely to community acceptance and God’s standards. These implications challenge us to consider our own views on judgment and acceptance – who do we 'cast out' today? In this frame, Miriam's tale serves as both a caution and a celebration of the resilience found in relations founded on humility and community support.