I understood the church to be the bridegroom of Christ, not his body. Can you explain what you mean there? (btw, I like how you describe the faith. This phrase is found over and over in orthodox prayer and liturgical chant. It's very beautiful and poetic.

)
The Church is a lot of things!
By definition, ekklesia (the greek word for church and the word written in the original New Testament) means 'assembly of believers'. You see, the church is not the temple we pray in or the building we partake in the Divine Liturgy, the church is the believers, the faithful men, women, and children who meet in these sacred places in order to pray for the world. The church is wherever the faithful congregate.
The church is also described as the body of Christ, that is, the presence of Christ in the world among the assembly of believers. For where two or three are together in His name, He is in the midst of them and sups with them. Thus, the church is the living presence of Christ in this material world, the very Body of Christ in the world.
The church is also described the bride of Christ in the New Testament. In Revelation, we read about the multitudes saying in chorus : "
“Hallelujah!
For the Lord our God
the Almighty reigns.
Let us rejoice and exult
and give him the glory,
for
the marriage of the Lamb has come,
and
his Bride has made herself ready;
it was granted her to clothe herself
with fine linen, bright and pure”—
for the fine linen is the righteous deeds of the saints.
And the angel said to me, “Write this: Blessed are those who are invited to the
marriage supper of the Lamb.” And he said to me, “These are the true words of God.”" (Revelation 19:6-9)
Above, we learn that in the Last Day, their will be a marriage feast of the Lamb, and in this heavenly eucharistic celebration, the bride, that is the church, will offer herself to Christ and be united with God (in a type of holy matrimony). In this faith, the assembly of believers are indeed in one faith, one mind, one spirit, one Lamb, and one bride.
And not only as a passive participant, but in an offering. For 'the Bride
has made herself ready; it was granted her
to clothe herself with fine linen, bright and pure'
And how did she make herself ready? By faith alone is how we clothe ourselves with fine linen, bright and pure? No, 'for the fine linen is the righteous deeds of the saints'.
That is why the church, the assembly of believers, look to the saints for instruction and emulation.