Exodus 30:21

And they shall wash their hands and their feet, and they shall not die: and it was to them a law forever, to him and to his seed and to their generations.

Exodus 28:43

And they shall be upon Aaron and upon his sons in their going into the tent of the appointment, or in their drawing near to the altar to serve in the holy place; and they shall not lift up to sin and die. A law forever to him and to his seed after him.

Exodus 27:21

In the tent of appointment from without the vail, which is over the testimony, Aaron shall arrange it, and his sons, from evening to morning, before Jehovah: a law forever for their generations for the sons of Israel.

Treasury of Scripture Knowledge

Summary

So they shall wash their hands and their feet, that they die not: and it shall be a statute for ever to them, even to him and to his seed throughout their generations.

A statute

General references

Bible References

A statute

Exodus 28:43
And they shall be upon Aaron and upon his sons in their going into the tent of the appointment, or in their drawing near to the altar to serve in the holy place; and they shall not lift up to sin and die. A law forever to him and to his seed after him.

General references

Exodus 40:7
And set the wash-basin between the tent of appointment and between the altar, and set water there.