Jesus was divine BEFORE (during and after) the time He inhabited the body---
How could it be BEFORE?
He always existed as the Word.
Otherwise the JWs are right in that Jesus was created.
The Catholics that decided that Mary was the Mother of God lived just after Jesus died.
It's not a modern invention.
Mary, the mother of the New Adam
Mary transmitted to Christ the entire human reality of Adam, so that he could become the new Adam, the Son of man, the « summary» of all men from the first.
Cf. IRENAEUS OF LYONS, Demonstration of the Apostolic Predication § 32
As a true mother, Mary guarantees that God assumed everything in us up to becoming "Son of man", so we are entirely assumed and entirely saved. As a divinely fecund Virgin, Mary guarantees that it was God who was born of her and that he really saves: with his divine power.
(cf. IRENAEUS OF LYONS, Against Heresies V, 19,1)
Irenaeus
“The Virgin Mary, being obedient to his word, received from an angel the glad tidings that she would bear God” (Against Heresies, 5:19:1 [A.D. 189]).
Hippolytus
“[T]o all generations they [the prophets] have pictured forth the grandest subjects for contemplation and for action. Thus, too, they preached of the advent of God in the flesh to the world, his advent by the spotless and God-bearing (theotokos) Mary in the way of birth and growth” (Discourse on the End of the World 1 [A.D. 217]).
source: https://www.catholic.com/tract/mary-mother-of-god
In looking up the above, I also came across the idea that if we do not accept that Mary is the Mother of God
it brings up the heresy of nestoreanism...Jesus is divided into two separate natures:
human and divine
It was decided at about the same time when the Trinity was being discussed, that Jesus is 100% human and 100% divine.
Next thing you know, we'll be debating His divinity...
Well done
Note well the new covenant is a reformation of the mosaic covenant heb 9:10 so there are many similarities between the two
Like the ark of the covenant
Ex 40:34 Then a cloud covered the tent of the congregation, and the glory of the Lord filled the tabernacle.
Luke 1:35
And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.
2 Sam 6:2 And David arose, and went with all the people that were with him from Baale of Judah, to bring up from thence the ark of God, whose name is called by the name of the Lord of hosts that dwelleth between the cherubims.
Lk 1:39 And Mary arose in those days, and went into the hill country with haste, into a city of Juda;
2 Sam 6:3 And they set the ark of God upon a new cart, and brought it out of the house of Abinadab that was in Gibeah: and Uzzah and Ahio, the sons of Abinadab, drave the new cart.
4 And they brought it out of the house of Abinadab which was at Gibeah, accompanying the ark of God: and Ahio went before the ark.
5 And David and all the house of Israel played before the Lord on all manner of instruments made of fir wood, even on harps, and on psalteries, and on timbrels, and on cornets, and on cymbals.
2 Sam 6:16 And as the ark of the Lord came into the city of David, Michal Saul's daughter looked through a window, and saw king David leaping and dancing before the Lord;
Lk 1:41 And it came to pass, that, when Elisabeth heard the salutation of Mary, the babe leaped in her womb; and Elisabeth was filled with the Holy Ghost:
2 Sam 6:9 And David was afraid of the Lord that day, and said, How shall the ark of the Lord come to me?
Lk 1:42 And she spake out with a loud voice, and said, Blessed art thou among women, and blessed is the fruit of thy womb.
43 And whence is this to me, that the mother of my Lord should come to me?
2 Sam 6:11 And the ark of the Lord continued in the house of Obededom the Gittite three months: and the Lord blessed Obededom, and all his household.
Lk 1:56 And Mary abode with her about three months, and returned to her own house.
2 Sam 6:12 And it was told king David, saying, The Lord hath blessed the house of Obededom, and all that pertaineth unto him, because of the ark of God. So David went and brought up the ark of God from the house of Obededom into the city of David with gladness.
Lk 1:41 And it came to pass, that, when Elisabeth heard the salutation of Mary, the babe leaped in her womb; and Elisabeth was filled with the Holy Ghost:
Lk 1: 67 And his father Zacharias was filled with the Holy Ghost, and prophesied…