'Regular' in the Bible

It even magnified itself to be equal with the Commander of the host; and it removed the regular sacrifice from Him, and the place of His sanctuary was thrown down.

And on account of transgression the host will be given over to the horn along with the regular sacrifice; and it will fling truth to the ground and perform its will and prosper.

Then I heard a holy one speaking, and another holy one said to that particular one who was speaking, “How long will the vision about the regular sacrifice apply, while the transgression causes horror, so as to allow both the holy place and the host to be trampled?”

Forces from him will arise, desecrate the sanctuary fortress, and do away with the regular sacrifice. And they will set up the abomination of desolation.

From the time that the regular sacrifice is abolished and the abomination of desolation is set up, there will be 1,290 days.