Please understand that I do not agree with Schroeder on everything. Right off the bat, he is Jewish and I am Christian. I do however agree with his point vis-à-vis relativity and inflationary theory and thus that both statements are true: God created the physical universe in a week (as seen from the inception space/time coordinates) - and also the physical universe is approximately 15 billion years old (from our space/time coordinates on earth).
My leading in the Spirit in reading Genesis chapters 1-3 is that it is speaking to creation and events not only of the physical realm but the spiritual realm as well. In other words, it is not merely a description of physical cosmology but rather is a description written by God, the Creator, Himself about all of His creation heaven and earth, spiritual and physical.
Thus I read with the language of Scripture before the language of science. To take the first few passages
It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, [they] are spirit, and [they] are life. John 6:63
And he shewed me a pure river of water of life, clear as crystal, proceeding out of the throne of God and of the Lamb. Rev 22:1
For my people have committed two evils; they have forsaken me the fountain of living waters, [and] hewed them out cisterns, broken cisterns, that can hold no water. Jer 2:13
For God, who commanded the light to shine out of darkness, hath shined in our hearts, to [give] the light of the knowledge of the glory of God in the face of Jesus Christ. 2 Corinthians 4:6
This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all. I John 1:5
Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life. John 8:12
I am come a light into the world, that whosoever believeth on me should not abide in darkness. John 12:46
I also assert the intersection of the spiritual and physical realms - not only the types, such as the Temple and the Ark, but in appearances of Christ after the resurrection, the transfiguration, visitation of angels - and something to which we can all testify: the indwelling of the Holy Spirit (John, Romans 8, I Cor 2, etc.)
As another point you might find interesting, some Jewish mystics do not see the firmament as a location in space/time but rather a boundary between the physical realm and the spiritual realm. IOW, its not there but everywhere. Further, they propose the boundary is the speed the light.
I agree with them about the firmament being a boundary and not a location, but I have no leading in the Spirit whether the boundary is dimensional (space/time itself) or the speed of light.
Oh, and the word void has a particular significance in cosmology. All cosmologies whether inflationary theory, multi-world, multi-verse, Ekpyrotic, cyclic, imaginary time, etc. - require a beginning because they rely on geometry for physical causation.
One form of causation is if not for A then C would not be. If not for time, events would not occur. If not for space, things would not be.
But there is no space, no time, no energy, no mass, no physical laws, no physical causation, no qualia nothing in the void. I repeat there is no physical causation in the void.
Again with the Jewish mystics their term for God in the beginning is Ayn Sof which means no-thing One without end from which all being emerges and into which all being dissolves. God alone is before the beginning, transcendent, existing, all powerful and the only possible uncaused caused of all that there is, both physical and spiritual.