The altar of incense.
Exodus 30:5 ... And thou shalt make the staves of shittim wood, & overlay them with gold.
Exodus 30:6 ... And thou shalt put it before the veil that is by the ark of the testimony, before the ... mercy seat that is over the testimony, where I will meet with thee.
Exodus 25:21,22 ... (The mercy seat with the cherubim) And thou shalt put the mercy seat above upon the ark: & in the ark thou shalt put the testimony that I shall give thee.
And there I will meet with thee, & I will commune with thee from above the mercy seat, from between the two cherubim which are upon the ark of the testimony, of all things which I will give thee in commandment unto the children of Is'ra-el.
Exodus 30:7 ... And Aa'ron shall burn thereon sweet incense every morning: when he dresseth the lamps, he shall burn incense upon it.
Exodus 30:34 ... And the LORD said unto Mo'ses, Take unto thee sweet spices, stacte, & onycha, & golbanum; these sweet spices with pure frankincense: of each shall there be a like weight:
Exodus 27:21 ... (The oil for the lamp) In the tabernacle of the congregation without the veil, which is before the testimony, Aa'ron & his sons, shall order it from evening to morning before the LORD: it shall be a statute for ever unto their generations on the behalf of the children of Is'ra-el.
Exodus 30:8 ... And when Aa'ron (setteth up) (causeth to ascend) the lamps (between the two evens) at even, he shall burn incense upon it, a perpetual incense before the LORD throughout your generations.
Exodus 30:9 ... Ye shall offer no ... strange incense thereon, nor burnt sacrifice, nor meat offering, neither shall ye pour drink offering thereon.
Leviticus 10:1 ... (Nadah & Abihu, for offering strange fire, are consumed.) AND Na'dab & A-bi'hu, the sons of Aa'ron, took either of them his censor, & put fire there in, & put incense thereon, & offered strange fire before the LORD, which he commanded them not.
Exodus 30:10 ... And ... Aa'ron shall make an atonement upon the horns of it once in a year with the blood of the sin offering of atonements; once in a year shall he make atonement upon it throughout your generations: it is most holy unto the LORD.
Leviticus 16:18 (the sin offering for the people.) And he shall go out unto the altar that is before the LORD, & make an atonement for it; & shall take of the blood of the bullock, & of the blood of the goat, & put it upon the horns of the altar round about.
Scripture reference used from The KJV Bible, SouthWestern Co., Nashville, TN