Miriam, the elder sister of Moses and Aaron, was afflicted with tzaraat (leprosy) after speaking negatively of Moses, and was quarantined outside of the camp for seven days--as related in Numbers 12
Links:
The Biblical account (with Rashi's commentary)
About Miriam
About Lashon Hara (negative speech)
This is my G‑d, and I will praise Him, the G‑d of my father, and I will exalt him.
Exodus 15:2
When He is only the G‑d of your father, He remains exalted and beyond your world. When you make Him your own G‑d, then you can truly praise Him with your heart.
Rabbi Isaiah Horowitz (16th century)
Only a fool will toss out the inheritance of many generations. But one who does not take ownership remains a child.
So it is with a material estate, so it is with the faith of our fathers and mothers. We must make it our own faith, as well.
And how do you make that faith your own? Ironically, through the power of your own mind.
Engage your mind to live by your faith.