I've asked a question here, where the answer quoted The Belgic Confession
We believe that by being thus conceived the person of the Son has been inseparably united and joined together with human nature, in such a way that there are not two Sons of God, nor two persons, but two natures united in a single person, with each nature retaining its own distinct properties. Thus his divine nature has always remained uncreated, without beginning of days or end of life, filling heaven and earth. His human nature has not lost its properties but continues to have those of a creature-- it has a beginning of days; it is of a finite nature and retains all that belongs to a real body. And even though he, by his resurrection, gave it immortality, that nonetheless did not change the reality of his human nature; for our salvation and resurrection depend also on the reality of his body.
The question here almost similar with the question before but now it's more about the sentence of The Belgic Confession quoted above.
I would like to start with something like this...
Eternal :
Jesus (the 2nd Person of the Trinity) is God and HE is in heaven.
HE has one nature. Let's just say, Nature-1.
(I use the word "HE" in bold, it means the HE is referring to a non-corporeal being who is God and I will bold the word whenever I mean is referring to that non-corporeal being).
And now there is the Incarnation, where at first is in a form of a male baby.
(I will use the word "He" not in bold which means that the "He" is referring to this male baby who is God_in_corporeal body).
there are not two Sons of God, nor two persons, but two natures united in a single person, with each nature retaining its own distinct properties
From the point of view of a time-frame just after the baby Jesus was born, how is the sentence which fit with the situation ?
A. He - this male baby (not HE) WAS in heaven before Incarnation.
He - this male baby (not HE) has two natures.
His first nature is nature-1 and His second nature is nature-2.
B. HE IS in heaven and now HE has two natures after the Incarnation.
HIS first nature is nature-1 and HIS second nature is nature-2.
This male baby, He is the form of HIS second nature.
Since the Belgic Confession say that there are not two Sons of God, then I think point-B is not the answer because it leads to a conclusion that there are two Sons of God, the non-corporeal one (HE) and the corporeal one (He, the male baby). Besides, in point-B - it is HE who now has two natures not He.
Since I feel awkward if I put the "before-now-after" in the sentence of point-A (where all the word "He" and "His" is referring to that male baby)... for example :
He (this male baby) WAS in heaven before Incarnation...
and now, after the Incarnation - He (this male baby) IS on earth
Before Incarnation, He (this male baby) has one nature...
and now, after the Incarnation - He (this male baby) has two natures.
So, the question is :
how is the sentence in point-A which fit to the condition after the incarnation when the sentence is applied with a word "before/now/after" ?
Thus his divine nature has always remained uncreated, without beginning of days or end of life, filling heaven and earth. His human nature has not lost its properties but continues to have those of a creature-- it has a beginning of days; it is of a finite nature and retains all that belongs to a real body
The quoted sentence above, in the point of view of point-B become something like this :
Thus, HE with HIS divine nature (first-nature) has always remained uncreated, without beginning of days or end of life, filling heaven and earth. While He, HIS second-nature (human nature) has not lost its properties but continues to have those of a creature-- it has a beginning of days; it is of a finite nature and retains all that belongs to a real body
And I myself thought that "A divine non-corporeal being (Person) along with HIS divine nature is the one who can filling heaven and earth".
So, what does it mean : "A divine nature filling heaven and earth" ?