In the old covenanat order God set ministry of High Priest who was figure of Jesus (Yeshua) the Messiah. Only the High Priest was allowed to go once a year into the Most Holy and he took with him the blood of the animal offering, which he sprinkled onto the mercy seat for the sake of the sins of the nation of Israel. God prescribed and set the High Priest to deliver cleansing of the sins of the nation of Israel. The High Priest went to the Most Holy and took the blood of the sin offering animal to the Most Holy and sprinkled blood onto the mercy seat and before it, and in this way  he delivered atonement to the nation of Israel. The Messiah Yeshua is the High Priest of the New Covenant and He is sinless and He has sacrificed Himself and shed His blood for the sake of our sins and He entered once for all into the Most Holy, having procured everlasting redemption.

Ex 28:
34 A golden bell and a pomegranate, a golden bell and a pomegranate, upon the hem of the robe round about.
35 And it shall be upon Aaron to minister: and his sound shall be heard when he goeth in unto the holy place before the LORD, and when he cometh out, that he die not.

In a pomegranate tree grows fruit like an apple. God ordered that in the old covenant in the High Priest garment must be a golden bell and a pomegranate, a golden bell and a pomegranate, upon the skirts of the robe round about. The High Priest must put on this garment and minister in the Holy Place before Lord God. By the sound of bell every Israelite heard where the High Priest was and bells were also for that reason that he didn't die when he is coming out from the Holy Place. In the New Covenant God has given the Holy Spirit to heart of Jesus' disciples that they would hear the voice the High Priest Jesus the Messiah.

Jewish tradition says that pomegranate signify righteousness, because they believe that inside of pomegranate is 613 seeds (in fact, every pomegranate has various amounts of seeds), and it corresponds with 613 commandments (mitzvot) of the law (Torah). For this reason on the time of Rosh Hashanah many Jews eat pomegranates. Some Jewish scholars believe that in the Garden of Eden's pomegranate was the famous Forbidden Fruit. However, the Bible doesn't say the name of the fruit, so we cannot know it. 

Targum of Jonathan says that there were seventy one golden bells and pomegranates on the skirts of the robe. Maimonides and R. Levi Ben Gershom says that seventy two. Clemens of Alexandrian said that three hundred and sixty six. However, the Bible doesn't tell the amount of bells and pomegranates, so we can't know it.

So 8:2 I would lead thee, and bring thee into my mother’s house, who would instruct me: I would cause thee to drink of spiced wine of the juice of my pomegranate.

Song of Solomon is prophetic book, which tells story of bridgeroom and bride, which are Jesus the Messiah and His congregation. So 8:2 says that bridgeroom (Messiah) lead His bride to drink spiced wine of the juice of His pomegranate. Jesus the Messiah said that the New Covenant is in His blood for the remission of sins. The wine is a figure of Jesus' blood in the New Covenant and also in the old covenant. Song of Solomon said that bridgeroom lead His bride His bride to drink spiced wine of the juice of His pomegranate. Golden bells are figure of the voice of the Lord and His truth and pomegranates is figure about the blood of the Messiah.