Mark 13:19

The third line (in English) translating the meaning of each word in the Orthodox Yiddish Brit Chadas

because those days will be a tribulation, such what become the equal is not happened since the beginning of the creation, which Hashem has created, until the present time, and it will more not be.

Cross References

Matthew 24:21

because it will then be a great trouble, whose equal is not become from the beginning of the world until now,

Mark 10:6

from beginning of the creation however has Hashem them created male and female. (Genesis 1, 27.)

Mark 13:18

be however pray, that it shall not to happen in winter.

Mark 13:20

and if the L-rd would not shortened the days, would no flesh (and blood) not saved become; but on account of the elect ones, whom he has chosen, has he shortened the days. (Daniel 12, 1.)

Revelation 7:14

and I did say to him: my lord, you (SG) know it. and he has me said: the these are the ones, who are come out of the great tribulation, and have washed their clothing/kittels and them white made in the blood of the Lamb.