וְשָֽׁפְטוּ֙ הָֽעֵדָ֔ה בֵּ֚ין הַמַּכֶּ֔ה וּבֵ֖ין גֹּאֵ֣ל הַדָּ֑ם עַ֥ל הַמִּשְׁפָּטִ֖ים הָאֵֽלֶּה׃
then the congregation shall judge between the smiter and the avenger of blood according to these ordinances;
Read kabbalistic (mystical) interpretation of Numbers 35:24: and classical mystical sources.