Broadly speaking there are three contexts in which “foundation(s) of the Earth/world” are the scriptural basis for how we can understand three important concepts in our unified theory of everything.
Foundations in Context
Foundation: מְכוֹנֶ֑יהָ – mechoneiha
The root that the word is derived from is makon, which is more broad, however this particular variant occurs in one place only. It clearly established that the foundation of the Earth was established once for ever.
Spiritual Separation
Separation is a scriptural doctrine which is generally thought of in terms of Christians holding themselves apart from the rest of the world and avoiding worldly distraction which can lead us into sin. There's more to it than that.
Formless > Formed
In the beginning the deep was formless. The subsequent account of creation shows how form and function go through several rounds of increasing order and complexity. The first was to take on the form of a sphere.
The Math of Gravity
The math of gravity requires that we assume gravity is concentrated in the center of the Earth. By a totally staggering coincidence, in Matty's Paradigm gravity is a field emitted from a singularity at the center of the Earth.
The Donkey’s Jawbone
The universe is both young and ancient simultaneously due of a phenomenon called gravitational time dilation (GTD). 2 Peter 3:8 is a mathematically accurate equation for GTD. We call it the Donkey's Jawbone.
God: אֱלֹהִ֑ים – elohim
A word frequently translated God is the Hebrew elohim. What's interesting is that the word is plural, denoting more than one. It's not a problem because we can resolve it with God the Father, Son and Holy Spirit.
Precambrian
Scripture includes a description of the deposition of Precambrian sediment in response to the creation of gravity on the 2nd day. That may seem far-fetched, but it's an example of Biblical exposition.
The Core Accretion Model
They key to understanding the inception of gravity as the creative act of the second day is the synchronicity between stretching out the heavens and establishing the foundations of the Earth. One command did both.
Eternity, the Soul and Time
There are two time-related concepts next to each other in the context of redeeming souls: cease and forever. This may also be rendered as stop eternity. That's what a gravitational singularity does: it stops time.