And Aaron shall make atonement upon the horns of it once in the year: with the blood of the sin offering of atonement once in the year shall he make atonement for it throughout your generations: it is most holy unto the LORD.
And Nadab and Abihu, the sons of Aaron, took each of them his censer, and put fire therein, and laid incense thereon, and offered strange fire before the LORD, which he had not commanded them.