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Daniel 12
8 Although I heard, I did not understand. Then I said, “My lord, what shall be the end of these things?”
9 And he said, “Go your way, Daniel, for the words are closed up and sealed till the time of the end.
10 “Many shall be purified, made white, and refined, but the wicked shall do wickedly; and none of the wicked shall understand, but the wise shall understand.
11 “And from the time that the daily sacrifice is taken away, and the abomination of desolation is set up, there shall be one thousand two hundred and ninety days.
12 “Blessed is he who waits, and comes to the one thousand three hundred and thirty-five days.
13 “But you, go your way till the end; for you shall rest, and will arise to your inheritance at the end of the days.”

Nelson, Thomas. Holy Bible, New King James Version (NKJV) (p. 875). Thomas Nelson. Kindle Edition.

The words in italics were added by the translators, verse 11 reads: “And from the time the daily is taken away, and the abomination of desolation is set up, one thousand two hundred and ninety days." So 1260+30 days after "the daily" is taken away, the anti-Christ will set up the abomination of desolation, and we know that that is 1260 from the start of Daniel's 70th week and 1260 days from the end.

So what is "the daily" that will be "taken away"? Well, it is certainly not the daily sacrifices that the Jews will present in the Third Temple, because that is what the anti-Christ will do at the midpoint. So who offers themselves as "living sacrifices" (Romans 12:1) and asks for "daily bread" (Matthew 6:11) but those who believe in Jesus Christ as their Savior and LORD?

Luke 21:36 “Watch therefore, and pray always that you may be counted worthy to escape all these things that will come to pass, and to stand before the Son of Man.”
Nelson, Thomas. Holy Bible, New King James Version (NKJV) (p. 1023). Thomas Nelson. Kindle Edition.

P.S. "confirming the covenant with many" is the sealing of the 144,000. Who would accept a peace deal that had a time limit on it? Also, the Two Witnesses show up 10 days afterwards, and preach for 1260 days. They are killed 20 days before the AtcD giving them time to lay in the streets for 3.5 days. My reading is that when they are raised up, the reaping of the Tribulation Saints (Rev 14:12-17; 15:2-4) takes place, since it says they are taken out of Great Tribulation (Rev 7:9-17).