13 When one with a discharge becomes clean of his discharge, he shall count off seven days for his cleansing, wash his clothes, and bathe his body in fresh water; then he shall be clean.
v’-khee yit-HAR ha-ZAV mi-zo-VO v’-SA-far LO shiv-AT ya-MEEM l’-ta-ho-ra-TO v’-khi-BES b’-ga-DAV v’-ra-KHATZ b’-sa-RO b’-MA-yim kha-YEEM v’-ta-HAYR
יג וְכִי־יִטְהַר הַזָּב מִזּוֹבוֹ וְסָפַר לוֹ שִׁבְעַת יָמִים לְטָהֳרָתוֹ וְכִבֶּס בְּגָדָיו וְרָחַץ בְּשָׂרוֹ בְּמַיִם חַיִּים וְטָהֵר׃
15:13 And bathe his body in fresh water
Chapter 15 discusses the different kinds of impurity that occur as a result of certain types of bodily discharges. As part of the purification process, the person who has become impure must immerse in a ritual bath. This immersion signifies an elevation in spiritual status, and it is no coincidence that water is the means through which this elevation occurs. Water is the source of life, and so it is appropriate to immerse in it during the process of spiritual rebirth and renewal. In addition, the fluid nature of water symbolizes that as spiritual beings, we are never fixed in one place. In life we have ups and downs, but there is always the potential for further growth.