Christ the Bridegroom is the central figure in the parable of the ten Virgins (Matthew 25: 1-13); Christ is the divine Bridegroom of the Church as described in the Book of Isaiah (chapter 54), as well as the primary image of Bridegroom Matins.
The title is suggestive of His divine presence and watchfulness (“Behold the Bridegroom comes in the middle of the night…”) during Holy Week and His selfless love for His Bride, the Church.
The Troparion
Behold the Bridegroom comes at midnight, and blessed is the servant whom he shall find watching, and unworthy is the servant whom he shall find heedless.
Beware, therefore, oh my soul. Do not be weighed down with sleep, lest you be given up to death, and lest you be shut out of the kingdom.
But rouse yourself, crying, Holy, Holy, Holy are Thou our God.
Through the Theotokos, have mercy on us.
“Alleluia, Behold the Bridegroom”
http://www.youtube.com/watch?v=kSxk8Nyc8LU
Bridegroom Matins
Bridegroom Matins is a service specific to the first four evenings of Holy Week (though it is often omitted on Holy Wednesday in favor of the service of Holy Unction) and commemorates the last days in the earthly life of the Lord. Incorporated into these services is the theme of the first three days of Holy Week; which is the last teachings of Christ to his disciples. As such, these services incorporate readings and hymns inspiring this theme.
The mood of the services is to experience sorrow and to feel Christ’s voluntary submission to His passions and highlight the purpose behind the evil that is about to take place against the Lord. The atmosphere is one of mourning (for sins) and is symbolic of the shame the Christian should feel for the Fall of Adam and Eve, the depths of hell, the lost Paradise and the absence of God.
The vestments of the Priest and the altar clothes are black or deep purple to symbolize and enhance the atmosphere of mourning and remembrance of sins. The main emphasis of the Bridegroom Service is metanoia [change of heart] and each service has its own particular theme on repentance and watchfulness. One of its primary features is its troparion:
Behold, the Bridegroom comes in the middle of the night, and blessed is the servant He shall find vigilant; but unworthy is he whom he shall find neglectful. Beware therefore, O my soul, lest you be weighed down by sleep, lest you be given over to death and be closed out from the kingdom; but rise up crying out: “Holy! Holy! Holy are You our God; through the intercessions of the Theotokos, have mercy on us.”