'Clean' in the Bible

Now as to your birth, on the day you were born your umbilical cord wasn't cut. You weren't washed with water to clean you, and nobody rubbed you with salt. And it's certain that you weren't wrapped in strips of cloth.

Her priests have violated my Law and profaned my sacred things. They didn't differentiate between what's sacred and what's common. They didn't instruct others to discern clean from unclean things. They refused to keep my Sabbaths.

"They are to teach my people how to discern what is holy in contrast to what is common, showing them how to discern between what is unclean and clean.