This text comes from Mediaeval Hymns and Sequences, edited by John Mason Neale, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
Blessed City, Heavenly Salem,
Vision dear of Peace and Love,
Who, of living stones upbuilded,
Art the joy of Heav'n above,
And, with angel cohorts circled,
As a Bride to earth dost move!
From celestial realms descending,
Ready for the nuptial bed,
To His presence, deck'd with jewels,
By her Lord shall she be led:
All her streets, and all her bulwarks,
Of pure gold are fashioned.
Bright with pearls her portal glitters;
It is open evermore;
And, by virtue of His merits,
Thither faithful souls may soar,
Who for Christ's dear Name, in this world
Pain and tribulation bore.
Many a blow and biting sculpture
Polish'd well those stones elect,
In their places now compacted
By the Heavenly Architect,
Who therewith hath will'd for ever
That His Palace should be deck'd.
Christ is made the sure Foundation,
And the precious Corner-stone,
Who, the two-fold walls surmounting,
Binds them closely into one:
Holy Sion's help for ever,
And her confidence alone.
All that dedicated City,
Dearly lov'd by God on high,
In exultant jubilation
Pours perpetual melody;
God the One, and God the Trinal,
Singing everlastingly.
To this Temple, where we call Thee,
Come, O Lord of Hosts, to-day!
With Thy wonted loving-kindness
Hear Thy people as they pray;
And Thy fullest benediction
Shed within its walls for aye.
Here vouchsafe to all Thy servants
That they supplicate to gain:
Here to have and hold for ever
Those good things their prayers obtain;
And hereafter in Thy Glory
With Thy blessed ones to reign.
Laud and honour to the Father;
Laud and honour to the Son;
Laud and honour to the Spirit;
Ever Three, and ever One:
Consubstantial, Co-eternal,
While unending ages run. Amen.