וְרָאָ֥ה הַכֹּהֵ֖ן אֶת־הַנָּ֑גַע וְהִסְגִּ֥יר אֶת־הַנֶּ֖גַע שִׁבְעַ֥ת יָמִֽים׃
And the priest shall look upon the plague, and shut up that which hath the plague seven days.
Read kabbalistic (mystical) interpretation of Leviticus 13:50: and classical mystical sources.