frankincense

Boyd’s Bible Dictionary:

An ingredient of the sacred oil
Used with showbread
Used with meat offerings
And when any will offer a meat offering unto the Lord, his offering shall be of fine flour; and he shall pour oil upon it, and put frankincense thereon: And he shall bring it to Aaron's sons the priests: and he shall take thereout his handful of the flour thereof, and of the oil thereof, with all the frankincense thereof; and the priest shall burn the memorial of it upon the altar, to be an offering made by fire, of a sweet savor unto the Lord: (Leviticus 2:1-21And when any will offer a meat offering unto the Lord, his offering shall be of fine flour; and he shall pour oil upon it, and put frankincense thereon: 2And he shall bring it to Aaron's sons the priests: and he shall take thereout his handful of the flour thereof, and of the oil thereof, with all the frankincense thereof; and the priest shall burn the memorial of it upon the altar, to be an offering made by fire, of a sweet savor unto the Lord: (Leviticus 2:1‑2))
And thou shalt put oil upon it, and lay frankincense thereon: it is a meat offering. And the priest shall burn the memorial of it, part of the beaten corn thereof, and part of the oil thereof, with all the frankincense thereof: it is an offering made by fire unto the Lord. (Leviticus 2:15-1615And thou shalt put oil upon it, and lay frankincense thereon: it is a meat offering. 16And the priest shall burn the memorial of it, part of the beaten corn thereof, and part of the oil thereof, with all the frankincense thereof: it is an offering made by fire unto the Lord. (Leviticus 2:15‑16))
And he shall take of it his handful, of the flour of the meat offering, and of the oil thereof, and all the frankincense which is upon the meat offering, and shall burn it upon the altar for a sweet savor, even the memorial of it, unto the Lord. (Leviticus 6:1515And he shall take of it his handful, of the flour of the meat offering, and of the oil thereof, and all the frankincense which is upon the meat offering, and shall burn it upon the altar for a sweet savor, even the memorial of it, unto the Lord. (Leviticus 6:15))
Prohibited, in sin offerings when they consist of turtledoves or pigeons
But if he be not able to bring two turtledoves, or two young pigeons, then he that sinned shall bring for his offering the tenth part of an ephah of fine flour for a sin offering; he shall put no oil upon it, neither shall he put any frankincense thereon: for it is a sin offering. (Leviticus 5:1111But if he be not able to bring two turtledoves, or two young pigeons, then he that sinned shall bring for his offering the tenth part of an ephah of fine flour for a sin offering; he shall put no oil upon it, neither shall he put any frankincense thereon: for it is a sin offering. (Leviticus 5:11))
In making an offering of memorial
Then shall the man bring his wife unto the priest, and he shall bring her offering for her, the tenth part of an ephah of barley meal; he shall pour no oil upon it, nor put frankincense thereon; for it is an offering of jealousy, an offering of memorial, bringing iniquity to remembrance. (Numbers 5:1515Then shall the man bring his wife unto the priest, and he shall bring her offering for her, the tenth part of an ephah of barley meal; he shall pour no oil upon it, nor put frankincense thereon; for it is an offering of jealousy, an offering of memorial, bringing iniquity to remembrance. (Numbers 5:15))
Commerce in
Used as an incense
Thou hast not brought me the small cattle of thy burnt offerings; neither hast thou honored me with thy sacrifices. I have not caused thee to serve with an offering, nor wearied thee with incense. (Isaiah 43:2323Thou hast not brought me the small cattle of thy burnt offerings; neither hast thou honored me with thy sacrifices. I have not caused thee to serve with an offering, nor wearied thee with incense. (Isaiah 43:23))
The multitude of camels shall cover thee, the dromedaries of Midian and Ephah; all they from Sheba shall come: they shall bring gold and incense; and they shall show forth the praises of the Lord. (Isaiah 60:66The multitude of camels shall cover thee, the dromedaries of Midian and Ephah; all they from Sheba shall come: they shall bring gold and incense; and they shall show forth the praises of the Lord. (Isaiah 60:6))
He that killeth an ox is as if he slew a man; he that sacrificeth a lamb, as if he cut off a dog's neck; he that offereth an oblation, as if he offered swine's blood; he that burneth incense, as if he blessed an idol. Yea, they have chosen their own ways, and their soul delighteth in their abominations. (Isaiah 66:33He that killeth an ox is as if he slew a man; he that sacrificeth a lamb, as if he cut off a dog's neck; he that offereth an oblation, as if he offered swine's blood; he that burneth incense, as if he blessed an idol. Yea, they have chosen their own ways, and their soul delighteth in their abominations. (Isaiah 66:3))
To what purpose cometh there to me incense from Sheba, and the sweet cane from a far country? your burnt offerings are not acceptable, nor your sacrifices sweet unto me. (Jeremiah 6:2020To what purpose cometh there to me incense from Sheba, and the sweet cane from a far country? your burnt offerings are not acceptable, nor your sacrifices sweet unto me. (Jeremiah 6:20))

Concise Bible Dictionary:

Frankincense—Boswellia Sacra
A fragrant resin. It was an ingredient in the holy anointing oil, and was used in the temple service (Ex. 30:3434And the Lord said unto Moses, Take unto thee sweet spices, stacte, and onycha, and galbanum; these sweet spices with pure frankincense: of each shall there be a like weight: (Exodus 30:34); Lev. 2:1, 15-161And when any will offer a meat offering unto the Lord, his offering shall be of fine flour; and he shall pour oil upon it, and put frankincense thereon: (Leviticus 2:1)
15And thou shalt put oil upon it, and lay frankincense thereon: it is a meat offering. 16And the priest shall burn the memorial of it, part of the beaten corn thereof, and part of the oil thereof, with all the frankincense thereof: it is an offering made by fire unto the Lord. (Leviticus 2:15‑16)
; Lev. 5:1111But if he be not able to bring two turtledoves, or two young pigeons, then he that sinned shall bring for his offering the tenth part of an ephah of fine flour for a sin offering; he shall put no oil upon it, neither shall he put any frankincense thereon: for it is a sin offering. (Leviticus 5:11); Lev. 24:77And thou shalt put pure frankincense upon each row, that it may be on the bread for a memorial, even an offering made by fire unto the Lord. (Leviticus 24:7); Song of Sol. 3: 6, Song of Sol. 4: 6, 14). It formed part of the gifts presented to the Lord by the Magi (Matt. 2:1111And when they were come into the house, they saw the young child with Mary his mother, and fell down, and worshipped him: and when they had opened their treasures, they presented unto him gifts; gold, and frankincense, and myrrh. (Matthew 2:11)); and was among the things carried to Babylon the Great (Rev. 18:1313And cinnamon, and odors, and ointments, and frankincense, and wine, and oil, and fine flour, and wheat, and beasts, and sheep, and horses, and chariots, and slaves, and souls of men. (Revelation 18:13)). It is traced to the Boswellia serrata of the botanists, which grows in India. By cutting slits in the bark the gum exudes. The best is white and bitter to the taste, though the yellowish in color is extensively used. The Mahometans choose the white, but the Greek and Roman churches use much of the colored.
Frankincense—Boswellia Serrata

Strong’s Dictionary of Greek Words:

Greek:
λίβανος
Transliteration:
libanos
Phonic:
lib’-an-os
Meaning:
of foreign origin (3828); the incense-tree, i.e. (by implication) incense itself
KJV Usage:
frankincense