TSK · Exodus 19:15

and be ready against the third day; for on the third day Yahweh will come down in the sight of all the people on Mount Sinai.

If a man lies with a woman and there is an emission of semen, they shall both bathe themselves in water, and be unclean until the evening.

David answered the priest, and said to him, "Truly, women have been kept from us about these three days. When I came out, the vessels of the young men were holy, though it was but a common journey. How much more then today shall their vessels be holy?"

"Therefore thus will I do to you, Israel; because I will do this to you, prepare to meet your God, Israel.

and to speak to the priests of the house of Yahweh of Armies, and to the prophets, saying, "Should I weep in the fifth month, separating myself, as I have done these so many years?"

"But who can endure the day of his coming? And who will stand when he appears? For he is like a refiner's fire, and like launderer's soap;

Therefore also be ready, for in an hour that you don't expect, the Son of Man will come.

Therefore since all these things will be destroyed like this, what kind of people ought you to be in holy living and godliness,