Exodus 4:24-26

On the way to Egypt, at a place where Moses and his family had stopped for the night, the LORD confronted him and was about to kill him. But Moses’ wife, Zipporah, took a flint knife and circumcised her son. She touched his feet with the foreskin and said, “Now you are a bridegroom of blood to me.” (When she said “a bridegroom of blood,” she was referring to the circumcision.) After that, the LORD left him alone.