Behold, a virgin shall conceive, and bear a son.@Isaiah 7:14
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Isaac Watts (1674-1748)

Isaac Watts, Hymns and Spiritual Songs, Book I, 1707, number 3.

Festal Song William H. Walter, in the Episcopal Hymnal with Tunes Old and New, by John Ireland Tucker, 1872 ( pdf nwc).

Behold, the grace appears!
The promise is fulfilled;
Mary, the wondrous virgin, bears,
And Jesus is the Child.

The Lord, the highest God,
Calls Him His only Son;
He bids Him rule the lands abroad,
And gives Him David’s throne.

O’er Jacob shall He reign
With a peculiar sway;
The nations shall His grace obtain,
His kingdom ne’er decay.

To bring the glorious news
A heav’nly form appears;
He tells the shepherds of their joys,
And banishes their fears.

Go, humble swains, said he,
To David’s city fly;
The promised Infant born today
Doth in a manger lie.

With looks and hearts serene,
Go visit Christ your King
;
And straight a flaming troop was seen:
The shepherds heard them sing:

Glory to God on high!
And heav’nly peace on earth;
Goodwill to men, to angels joy,
At the Redeemer’s birth!

In worship so divine,
Let saints employ their tongues;
With the celestial hosts we join,
And loud repeat their songs:

Glory to God on high!
And heav’nly peace on earth;
Goodwill to men, to angels joy,
At our Redeemer’s birth!