Is there objective Truth?

[Edwardo Piet]

That's true.

Here's another certainty: Nothing happened before time.

What about in an undifferentiated existence in which there is no movement.  There is duration of substance but no change/movement by which time could be observed/recorded.

It's still true to say that nothing happened before time. Because 'before' is a temporal concept and already presupposes time.

As soon as the substance moves to create space within itself for little bits of itself to move/orbit within, relative time begins.

Nothing happened before time began. So there was no point at which it really began. So it's not true to say that it began or that there was a beginning. It's only true to say that there was a first point in time. It didn't really begin because nothing happened before it for it to arise out of. Because, again, "before" is a temporal concept.

Other things began. The first point in time was not a beginning because it didn't begin because there was no point in time which it really began because there was nothing before it because "before" is a temporal concept.

Before the existence of voided space is non-relative time in an eternal homogeneous substance.

This interests me. If we can start from the premise that nothing happened before time, can you elaborate on that?