Leviticus 13:50

And after it has been seen by the priest, the thing which is so marked is to be shut up for seven days:

Ezekiel 44:23

And they are to make clear to my people the division between what is holy and what is common, and to give them the knowledge of what is clean and what is unclean.

Treasury of Scripture Knowledge

Summary

And the priest shall look upon the plague, and shut up it that hath the plague seven days:

General references

Bible References

General references

Leviticus 14:38
Then the priest will go out of the door of the house, and keep the house shut up for seven days:

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain