Leviticus 5:12

‘He shall then bring it to Aaron’s sons the priests; and he shall take from it his handful of its fine flour and of its oil with all of its frankincense. And the priest shall offer it up in smoke as its memorial portion on the altar, an offering by fire of a soothing aroma to Yahweh.

‘The priest then shall raise up from the grain offering its memorial portion, and he shall offer it up in smoke on the altar as an offering by fire of a soothing aroma to Yahweh.

And according to the Law, one may almost say, all things are cleansed with blood, and without shedding of blood there is no forgiveness.