Notice the deep theology which was sung 500-700 years or more ago....people were listening and learning.
And to bring together the great heritage of David and Our Dear Lady, Mary, one more from Anonymous 4
Prolis eterne genitor /
Psallat mater gracie / [Pes]
Triplum
Prolis eterne genitor loquens de filio
et prophetis vario vaticinio
consummato temporum iam curriculo
misit unigenitum e celi solio
qui carnem assumeret absque contagio
in beate virginis sacrato utero
ut in carnis vinceret domicilio
hostem cuius vincerat carnis suggestion
et sic digna dieret reconpensation
hominis quam transtulit Ade transgressio
dum pro servo filius offertur domino
homo maior homine dus in filio
sic ablatum cumulat restitution
et offensam diluit amara passio.
Dum pro reis innocens fit immolation
que opertet fieri visitatio
ut relatum fieret satisfactio
incarnati filii iam patet seculo
quam transsumpsit pastorum pura devotio.
Duplum
Psallat mater gracie gaudet ecclesia
per quam nova gaudet prole celi curia
in excelsis canitur deo gloria,
quo testatur resonans vox angelicapariente genitorem nati filia
vagit in presepio celorum gloria;
o beata que [assident] animalia
pastor petit Bethleem grandi fiducia,
ut cernant in stabulo regentem omnia.
O quam alta summi regis sunt palacia
cui cedunt ut recumbant animalia
ubi queso milites ubi familia
ubi thronus ubi capax aula regia
talia respondeat virgo paupercula
que diversorii parit angustia
cuius fetum enim locant cubicula
ergo regis glorie mater et filia
nos [de hac] ingloria transfer miseria.
Triplum
When time had run it’s course, the father of the eternal offspring, speaking about the son and the
prophets through diverse prophecies, sent from the heavenly throne his only begotten son, who
was to become flesh without any contagion in the blessed virgin’s hallowed womb, that in this
fleshly abode he might vanquish the devil, whose temptation of the flesh had been victorious, and
that thus man’s fitting compensation might be accomplished, which Adam’s transgression had
postponed; since on behalf of the slave the son, a man greater than man – God in the son – is
offered to the Lord, the restitution thus augments what was once lost and the bitter passion
washes away the offence. Since for the benefit of the culprits the innocent sacrifice takes place,
which needs to bring about the visitation so that the report might be written, it is now manifest to
this age that the Son, having been made flesh, has accomplished the penance, because the
shepherd’s pure devotion has spread the news.
Duplum
Let the gracious mother sing praises, the church rejoices; because of her the heavenly assembly
rejoices in the new offspring, and glory is sung to God in the highest, wherefore the angels’
voices resoundingly bear witness, while the son’s daughter gives birth to the father. The glory of
the heavens is crying in the manger; o blessed animals sitting there; the shepherd with abounding
trust proceeds to Bethlehem that there in the stable he might descry Him who rules over
everything. O how great are the palaces of the highest king, from whom the animals move away
that they might lie down; pray, where are the soldiers, where is the household, where the throne,
where the spacious royal hall? Let the poor virgin answer such questions, who gives birth in the
cramped spaces of the inn, whose bedchamber accommodates the babe; therefore, mother and
daughter of the glorious king, take us away from this inglorious misery