Here are the literal facts about the covenant from Dan. 9:27: "He" makes it, "with the many" (Jewish nation), "for one week" (7 years), "he breaks the covenant in the middle" (3.5 years) stopping sacrifice.
Hebrew grammar is similar to English grammar (in fact all languages that I know) in that the pronoun "he" looks for the nearest antecedent. Verse 26 "the prince who is to come" is the nearest antecedent. Those who believe the "he" is the Messiah have to make a grammatical leap, not to mention the fact that Jesus is no where stated that he made a 7 year covenant with Israel that He broke in the middle, stopping sacrifice. True, His death is the ultimate sacrifice and all that is needed, but that's not what Dan. 9:27 alludes to.
No preterist can prove the details of the covenant have been fulfilled as Dan. 9:27 gives. It's still future. Does this mean there has been a 2000 year gap in this prophecy? Yes, but there are numerous prophecies where Jesus' 1st Advent and His 2nd Coming are blended, and they all have had a 2000 year gap. Not unusual or unbelievable.
Typically, a relative clause modifies a noun or noun phrase, and uses some grammatical device to indicate that one of the arguments within the relative clause has the same referent as that noun or noun phrase. For example, in the sentence I met a man who wasn't there, the subordinate clause
who wasn't there is a relative clause, since
it modifies the noun man, and uses the pronoun who to indicate
that the same "man" is referred to within the subordinate clause (in this case, as its subject).
Relative clause - Wikipedia, the free encyclopedia
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Polysyndeton is the use of several conjunctions in close succession, especially where some might be omitted (as in "he ran and jumped and laughed for joy"). It is a stylistic scheme used to achieve a variety of effects: it can increase the rhythm of prose, speed or slow its pace, convey solemnity or even ecstasy and childlike exuberance. Another common use of polysyndeton is to create a sense of being overwhelmed, or in fact directly overwhelm the audience by using conjunctions, rather than commas, leaving little room for a reader to breathe.[1][2]
In grammar, a polysyndetic coordination is a coordination in which all conjuncts are linked by coordinating conjunctions (usually and, but, or, nor in English).
King James Bible
Polysyndeton is used extensively in the King James Version of the Bible. For example:
And every living substance was destroyed which was upon the face of the ground, both man, and cattle, and the creeping things, and the fowl of the heaven; and they were destroyed from the earth: and Noah only remained alive, and they that were with him in the ark. Genesis 7:22-24
Or if a soul touch any unclean thing, whether it be a carcass of an unclean beast, or a carcass of unclean cattle, or the carcass of unclean creeping things, and if it be hidden from him; he also shall be unclean, and guilty. Leviticus 5:2.
And Joshua, and all of Israel with him, took Achan the son of Zerah, and the silver, and the garment, and the wedge of gold, and his sons, and his daughters, and his oxen, and his asses, and his sheep, and his tent, and all that he had. Joshua 7.24.
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Daniel 9:27
King James Version (KJV)
27
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.