"Everything has an end, a sausage has two." -German proverb
We think space and time began with the Big Bang. So, where and when did the Big Bang come from..? A compelling theory called Conformal Cyclic Cosmology developed by Nobel winner Roger Penrose, suggests our universe will cease to experience time once only photons are left (for slightly technical reasons, photons don't exerience time, see Does light experience time?
A great deal of our language depends on comparisons, and 'end' is one of those things, see: Life and Death as one and the same?
It's quite a common thing for people to use a statement that aims to move a discussion forward, and say, in the terms of the old debate, the new statement is self-contradictory. And indeed, that's why the debate hadn't moved on. An example is when people say Postmodernism is the metanarrative of not having metanarratives, the philosophy of not expecting one final unified philosophy - but in it's own terms, it describes skepticism or incredulity towards metanarratives, rather than an assertion of being the final one.
So another example, the ancient wisdom-tradition saying, This too shall pass. Shall that also pass? Once there are only photons left, who will know..? And yet, it expresses something even more timeless, that it's in the nature of things that arise, to be time-bound, and to pass, whether we wish it or not, and there is comfort knowing it applies to the good and the bad.
A core job of philosophy is investigating definitions, and especially edge-cases or where terms seem to start fraying and breaking down.
What does it mean to stand outside of time, in a place where ending has ended? Well, surely it would be unbegun also, timeless. An example might be the E8 mathematical structure, which seems to represent all possible sets of fundamental physical. To not pass away is also to not arise, which means to have always been.