Exodus 30:9

6 And thou shalt put it before the vail that [is] by the ark of the testimony, before the mercy seat that [is] over the testimony, where I will meet with thee.

7 And Aaron shall burn thereon sweet incense every morning: when he dresseth the lamps, he shall burn incense upon it.

8 And when Aaron lighteth the lamps at even, he shall burn incense upon it, a perpetual incense before the LORD throughout your generations.

9 Ye shall offer no strange incense thereon, nor burnt sacrifice, nor meat offering; neither shall ye pour drink offering thereon.

10 And Aaron shall make an atonement upon the horns of it once in a year with the blood of the sin offering of atonements: once in the year shall he make atonement upon it throughout your generations: it [is] most holy unto the LORD.

11 And the LORD spake unto Moses, saying,

12 When thou takest the sum of the children of Israel after their number, then shall they give every man a ransom for his soul unto the LORD, when thou numberest them; that there be no plague among them, when [thou] numberest them.