Exodus 4:25

Then Zipporah took a sharp stone, and cut off the foreskin of her son, and cast it at his feet, and said, Surely a bloody husband art thou to me.

Cross-references

In Joshua 5:2, the command to use flint knives for circumcision echoes Zipporah's emergency act here — both involve the covenant sign performed with a flint.

Joshua 5:3 records the execution of circumcision with flint knives, directly paralleling the material and purpose of Zipporah's circumcision in this verse.

Genesis 17:10 establishes circumcision as the covenant sign for every male — the very rite Zipporah performs here to avert God's judgment.

Genesis 17:11 specifies circumcision as the fleshly sign of the covenant — Zipporah's action here applies that sign in an emergency context.