Very early on in the Divine Liturgy we chant a beautiful hymn which begins:
"Ο μονογενης Υιος και Λογος του Θεου...." (O First-born Son and Word of God....)
At the very beginning of the Liturgy, we get right into the earliest theology of The Church! It continues: "...being Immortal, condescended for our salvation to be incarnate of the Holy Theotokos and Ever-Virgin Mary, and unchangeably became Man; and crucified, O Christ our God, You trampled Death by death, being One of the Holy Trinity, glorified, together with the Father and the Holy Spirit; save us!"
Indeed, that is an exquisitely beautiful hymn, dear Kolokotronis! Thank you so much!!!
And here I was, silly me, thinking all along that μονογενες meant only [mono] begotten [genes].
Wouldn't first-born imply that there may be a "second-born?"