Exodus 30:17-21 Common English Bible (CEB)
Instructions for the washbasin
17 The Lord spoke to Moses: 18 Make a copper basin for washing along with its copper stand. Put it between the meeting tent and the altar, and put water in it. 19 Aaron and his sons will use it to wash their hands and their feet. 20 When they go into the meeting tent or approach the altar to minister and to offer a food gift to the Lord, they must wash with water so that they don’t die. 21 They must wash their hands and their feet so that they don’t die. This will be a permanent regulation for them, for Aaron and his descendants in every generation.