לָנֻ֨ס שָׁ֜מָּה רוֹצֵ֗חַ אֲשֶׁ֨ר יִרְצַ֤ח אֶת־רֵעֵ֙הוּ֙ בִּבְלִי־דַ֔עַת וְה֛וּא לֹא־שֹׂנֵ֥א ל֖וֹ מִתְּמ֣וֹל שִׁלְשׁ֑וֹם וְנָ֗ס אֶל־אַחַ֛ת מִן־הֶעָרִ֥ים הָאֵ֖ל וָחָֽי׃
that the manslayer might flee thither, that slayeth his neighbour unawares, and hated him not in time past; and that fleeing unto one of these cities he might live:
Read kabbalistic (mystical) interpretation of Deuteronomy 4:42: and classical mystical sources.