The Bible clearly says the earth and heaven do have foundations, there is no argument over that. The argument is whether those foundations are the words of God (physics) or whether they are literal tangible foundations that hold them up.
The bible doesn’t say one way or the other yet flat earthers claim it does and that makes Christianity look bad to the unbelieving world and rightly so.
It is likely both, brother. Everything we see was spoken into existence by God = God's Word.
AMEN = It is BOTH
The Eternal Foundation for TRUTH, Eternal Life and Creation is CHRIST
This earth and the heavens/stars is physical and will pass away.
GOD will Create New = Revelation 21:1-7
Then I saw a new heaven and a new earth, for the first heaven and earth had passed away, and the sea was no more.
I saw the holy city, the new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband.
And I heard a loud voice from the throne saying:
“Behold, the dwelling place of God is with man,
and He will dwell with them.
They will be His people,
and God Himself will be with them as their God.
‘He will wipe away every tear from their eyes,’
and there will be no more death
or mourning or crying or pain,
for the former things have passed away.”
And the One seated on the throne said, “Behold, I make all things new.” Then He said, “Write this down, for these words are faithful and true.”
And He told me, “It is done! I am the Alpha and the Omega, the Beginning and the End. To the thirsty I will give freely from the spring of the water of life.
The one who overcomes will inherit all things, and I will be his God, and he will be My son.