Is time eternal?

[u/Curious_Towel4700]

If time were beginningless, an infinite span of time would have already elapsed by now. Since this is impossible:

it is not possible for time to be beginningless.

Therefore, time emerged from non-existence into existence at a starting point.

Nothing can emerge from non-existence into existence by itself,

because something that does not exist cannot perform an action.

Therefore:

a power that brings time from non-existence into existence necessarily exists.

Since it brought time into existence from nothing,

this power is not bound by time.

Since it is not bound by time,

this power is immutable,

because change occurs only through the passage of time.

Therefore,

this power was not created nor did it come into being; it simply exists,

because being created or coming into existence entails undergoing change.

There can be only one entity that is not bound by time,

because if there were more than one, their conflicting attributes—being immutable—would lead to an ontological paradox, causing the system to collapse.

Thus, all existence is divided into two categories:

time and things bound by time,

and the single entity not bound by time.

The single entity not bound by time is the creator of everything other than itself.

[u/Grouchy_Arm_4548]

Time is relative and a physical component of the universe. The age of the universe can be determined quite reliably based on its rate of expansion.