זוהר בראשית — דף ריב ע”א

Rabbi Elazar asked his father: what does 'come to Pharaoh' mean? He answered: a person has no permission to enter before a king without authorization. All the camps of angels stood before that great serpent. Rabbi Yitzhak said: wherever temptation is found, the Holy One blessed be He opens another way to escape. The impure spirit enters for a moment and passes, but the Shekhinah always comes to save.