出埃及記30:17-21

30:17 耶和華曉諭摩西說：
30:18 「你要用銅做洗濯盆和盆座，以便洗濯。要將盆放在會幕和壇的中間，在盆裡盛水。
30:19 亞倫和他的兒子要在這盆裡洗手洗腳。
30:20 他們進會幕，或是就近壇前供職給耶和華獻火祭的時候，必用水洗濯，免得死亡。
30:21 他們洗手洗腳就免得死亡。這要作亞倫和他後裔世世代代永遠的定例。」

¹⁷ Then the Lord said to Moses, ¹⁸ “Make a bronze basin, with its bronze stand, for washing. Place it between the tent of meeting and the altar, and put water in it. ¹⁹ Aaron and his sons are to wash their hands and feet with water from it. ²⁰ Whenever they enter the tent of meeting, they shall wash with water so that they will not die. Also, when they approach the altar to minister by presenting a food offering to the Lord, ²¹ they shall wash their hands and feet so that they will not die. This is to be a lasting ordinance for Aaron and his descendants for the generations to come.”

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    水有潔淨的作用，藉由洗手和腳，代表手潔心清。