A. Who Is The Bridegroom?

A. Who Is The Bridegroom?
The Bridegroom, referred to as the “Lamb,” is none other than the Lord Jesus Christ. John 1:29 tells us that,
“The next day John seeth Jesus coming unto him, and saith behold the Lamb of God, which taketh away the sin of the world.” 
John’s reference to the “Lamb of God,” of course, reminds us of how our Savior shed His blood upon Calvary as payment for our sins. Peter in his First Epistle, 1 Peter 1:18-19 describes this perfectly.
“Forasmuch as ye know that ye were not redeemed with corruptible things, as silver and gold, from your vain conversation received by tradition from your fathers.” (1 Peter 1:18).
But with the precious blood of Christ, as of a lamb without blemish and without spot.” (1 Peter 1:19).
1. The Bridegroom in Relation to Israel.
Had Israel, as a nation, accepted Christ as their long prophesied Messiah, then He (the Bridegroom) would have taken Israel as His Wife, and established the Kingdom at that time. 
2. Mark 2:19-20. The Marriage and Kingdom on Hold?
When the Scribes and Pharisees were finding fault with Christ’s disciples because they did not fast, the Lord stated in Verse 19,
“...Can the children of the bridechamber fast, while the bridegroom (Christ) is with them?...”
Then in Verse 20, He speaks about His Ascension back to Heaven as the Marriage and the Kingdom would be put on hold.
"But the days will come, when the bridegroom (Christ) shall be taken away from them, then shall they fast in those days."
The reason is explained by John 1:11. 
“He (i.e., Christ, the Bridegroom) came unto his own (Israel to reign with Him as his wife) and his own received him not.”
Therefore there is no unity of marriage, as Christ returns to Heaven (Acts 1:4). 
3. Who is the Bride?
As one studies Hosea, Ezekiel, and Isaiah; we find that all three great prophets address Israel as the WIFE of Jehovah. Israel is also referred to as the BRIDE in John 3:29. This is John the Baptist’s testimony about his relationship to Christ.
“He (Christ) that hath the bride (Israel) is the bridegroom: But the friend (John the Baptist) of the bridegroom, which standeth and heareth him, rejoiceth greatly because of the bridegroom’s voice: This is my joy therefore fulfilled. (John 3:29)
4. The Wife (Israel) Rejects the Bridegroom (Jesus Christ).
As the Old Testament prophets state, Israel is the forsaken Wife of Jehovah, embodied by Christ in human flesh. Because of Israel’s idolatries and her adulteries and her rejection of her Bridegroom (Christ), she is an alienated wife. She will, in the future, be restored and reign with Christ in the Kingdom forever. (Ezekiel 36:16-38).
5. The Wife of the Lamb in Revelation 19:7.
“Let us be glad and rejoice, and give honor to him: for the marriage of the Lamb is come and his WIFE (bride) hath made herself ready.”
The "Wife," or Bride, is not Israel; but, rather the Church; i.e., all Christians from Pentecost to the Rapture, a time known as the Dispensation of Grace. It is the Spiritual Body of Christ (1 Corinthians 12:13).
When Israel, as the Wife of Jehovah, is restored she will not be considered a bride; as no restored wife is ever referred to as a VIRGIN. But in Revelation 19, we find the wife (bride) is a virgin. The Word of God in 2 Corinthians 11:2 speaks concerning the Church:
“...I have espoused you to one husband (Christ), that I may present you as a chaste VIRGIN to Christ.”
Further, in Ephesians 5:30-32, the Word of God states,
“For we are members of his body, of his flesh, and of his bones. (Ephesians 5:30) For this cause shall a man leave his father and mother, and shall be joined unto his wife, and they two shall be one flesh. (Ephesians 5:31) This is a great mystery: but I speak concerning CHRIST AND THE CHURCH.” (Ephesians 5:30-32)
These verses tell us, therefore, that the Bride, married to our Lord, is the Church made up of every saved individual.
B. Examining Revelation 19:7-8.