Below are most of the major translations. You will see that the "He" of the verse is not confirming and already existing agreement, but is the one making the covenant. By the way, to "confirm a covenant" does not infer that it is an existing covenant. To confirm one, also means to make it or establish it.
Verse (Click for Chapter)
New International Version
He will confirm a covenant with many for one 'seven.' In the middle of the 'seven' he will put an end to sacrifice and offering. And at the temple he will set up an abomination that causes desolation, until the end that is decreed is poured out on him."
New Living Translation
The ruler will make a treaty with the people for a period of one set of seven, but after half this time, he will put an end to the sacrifices and offerings. And as a climax to all his terrible deeds, he will set up a sacrilegious object that causes desecration, until the fate decreed for this defiler is finally poured out on him."
English Standard Version
And he shall make a strong covenant with many for one week, and for half of the week he shall put an end to sacrifice and offering. And on the wing of abominations shall come one who makes desolate, until the decreed end is poured out on the desolator.”
New American Standard Bible
"
And he will make a firm covenant with the many for one week, but in the middle of the week he will put a stop to sacrifice and grain offering; and on the wing of abominations will come one who makes desolate, even until a complete destruction, one that is decreed, is poured out on the one who makes desolate."
King James Bible
And he shall confirm the covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations he shall make
it desolate, even until the consummation, and that determined shall be poured upon the desolate.
Holman Christian Standard Bible
He will make a firm covenant with many for one week, but in the middle of the week he will put a stop to sacrifice and offering. And the abomination of desolation will be on a wing of the temple until the decreed destruction is poured out on the desolator."
International Standard Version
He will make a binding covenant with many for one week, and for half of the week he will suspend both the sacrifice and grain offerings. Destructive people will cause desolation on the pinnacle until it is complete and what has been decreed is poured out on the desolator.'"
NET Bible
He will confirm a covenant with many for one week. But in the middle of that week he will bring sacrifices and offerings to a halt. On the wing of abominations will come one who destroys, until the decreed end is poured out on the one who destroys."
New Heart English Bible
He shall make a firm covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the offering to cease. And on the wing of abominations shall come one who destroys, and even until a complete destruction, until the decreed end is poured out on the one who destroys."
GOD'S WORD® Translation
He will confirm his promise with many for one set of seven time periods. In the middle of the seven time periods, he will stop the sacrifices and food offerings. This will happen along with disgusting things that cause destruction until [those time periods] come to an end. It has been determined that this will happen to those who destroy [the city]."
JPS Tanakh 1917
And he shall make a firm covenant with many for one week; and for half of the week he shall cause the sacrifice and the offering to cease; and upon the wing of detestable things shall be that which causeth appalment; and that until the extermination wholly determined be poured out upon that which causeth appalment.'
New American Standard 1977
“
And he will make a firm covenant with the many for one week, but in the middle of the week he will put a stop to sacrifice and grain offering; and on the wing of abominations
will come one who makes desolate, even until a complete destruction, one that is decreed, is poured out on the one who makes desolate.”
Jubilee Bible 2000
In one week (they are now seventy)
he shall confirm the covenant by many: and at the midst of the week he shall cause the sacrifice and the oblation to cease, and because of the many abominations, desolation shall come, even until complete destruction shall be poured out upon the abominable people.
King James 2000 Bible
And he shall confirm the covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the offering to cease, and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate.
American King James Version
And he shall confirm the covenant with many for one week: and in the middle of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured on the desolate.
American Standard Version
And he shall make a firm covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the oblation to cease; and upon the wing of abominations'shall come one that maketh desolate; and even unto the full end, and that determined, shall wrath be poured out upon the desolate.
Douay-Rheims Bible
And he shall confirm the covenant with many, in one week: and in the half of the week the victim and the sacrifice shall fall: and there shall be in the temple the abomination of desolation: and ihe desolation shall continue even to the consummation, and to the end.
Darby Bible Translation
And he shall confirm a covenant with the many [for] one week; and in the midst of the week he shall cause the sacrifice and the oblation to cease, and because of the protection of abominations [there shall be] a desolator, even until that the consumption and what is determined shall be poured out upon the desolate.
English Revised Version
And he shall make a firm covenant with many for one week: and for the half of the week he shall cause the sacrifice and the oblation to cease; and upon the wing of abominations shall come one that maketh desolate; and even unto the consummation, and that determined, shall wrath be poured out upon the desolator.
Webster's Bible Translation
And he shall confirm the covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations, he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate.
World English Bible
He shall make a firm covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the offering to cease; and on the wing of abominations [shall come] one who makes desolate; and even to the full end, and that determined, shall [wrath] be poured out on the desolate.