This verse is dotted with emphasized "you yourselves," with extra "you" pronouns used as subject of the phrases that are edited out in translation. There is also a "yourselves" that is part of the second "sit" verb. There are two different verbs translated as "sit" here, that have a very different meanings. The first, applied to the son of the man, means "sit," but the other, applied to the Apostles, means "drop yourselves down." The second is only used by Jesus in this verse. The two words sound alike, but the first is more formal with a sense of honor while the second has the sense of sitting someone down to put them to work. There is a humorous contrast here between the honor Jesus will get and the fact that though the apostles are going to be put to work.
There is another unique word here, used only once by Jesus, translated as "generation" and "renewal of all things." I cannot find another used of it in any other ancient Greek work. The word is a compound. The prefix means "again." The base is an adjective referring to a day that honors the birthday of the dead. It is actually from the same root as the word for "birthday," which has the same root as the name of the first book of the bible, Genesis, the means "origin" and "source." So the sense is that there is a second creation.
Christ's Words in Matthew as a Guide to 40 Days of Prayer.