“In those days,
There will be suffering,
Such as has not been
From the beginning
Of the creation
That God created
Until now,
And never will be.”
ἔσονται γὰρ αἱ ἡμέραι ἐκεῖναι θλῖψις, οἵα οὐ γέγονεν τοιαύτη ἀπ’ ἀρχῆς κτίσεως ἣν ἔκτισεν ὁ Θεὸς ἕως τοῦ νῦν καὶ οὐ μὴ γένηται.
There is something similar, almost word for word, in Matthew, chapter 24:21, but not in Luke. This wording has a hint of Daniel, chapter 12:1 and Joel, chapter 2:2, who talked about the Day of Yahweh. Mark indicated that Jesus said that at the end times, in those days (ἔσονται γὰρ αἱ ἡμέραι), there will be such suffering or tribulation (ἐκεῖναι θλῖψις) that no one has ever seen anything like it since the beginning of the world that God created until now (οἵα οὐ γέγονεν τοιαύτη ἀπ’ ἀρχῆς κτίσεως ἣν ἔκτισεν ὁ Θεὸς ἕως τοῦ νῦν). In fact, there never will be any kind of suffering like this at any time (καὶ οὐ μὴ γένηται). This was going to be bad, nothing like it had ever happened before. This would be the unique end times.