How did Zipporah know that circumcision was the cause of the death threat in Exodus 4:25?
Exodus 4:24-25 NASB
[24]Now it came about at the lodging place on the way that the Lord met him and sought to put him to death.
[25]Then Zipporah took a flint and cut off her son’s foreskin and threw it at Moses’ feet, and she said, …