The most interesting thing about this verse is the use of a verse that indicates a sense of happenstance in being deemed worth to gain the resurrection. This is clearly intention and thoroughly hidden in translation.

The Greek word translated as "but" means "but", "however", and "on the other hand". Since it always falls in the second position, translating it as "however" often captures its feeling better. 

The word translated as "they which" is the Greek definite article, which usually precedes a noun and, without a noun, takes the meaning of "the one." The Greek article is much closer to our demonstrative pronouns ("this", "that", "these", "those"). See this article for more. 

"Shall be accounted worthy" is a Greek word Jesus used for the first time here that means to " deem worthy", "hold in high esteem", "command", "deign", and "claim" in an argument. The tense is not the future tense but a form that can be any point in time, past, present, or future. The form is an adjective, "being deemed worthy".

"To obtain" is  a verb that Jesus only uses here that, when used with another verb, expresses coincidence. It means to " happen to be at", "happen to one", "any chance person", "happened anyhow", "happened anywhere", "gains one purpose", "succeed", "happen upon", "meet with misfortune". The form is an infinitive, if we assume "succeed" is the feeling, it would be "to happen upon success."

The word translated as "that" is an adjective that highlights its noun as being in a specific place or time from a word that means "there."

"World" is the word which is the root of our word eon, that means "lifetime", "life", "a space of time", "an age," an epoch," and "the present world." See this article on words translated as "world" in Jesus's words. 

The Greek word translated as "and" is used as the conjunction "and", but it also is used to add emphasis ("also"). I

While the Greek word translated as "resurrection" is understood that way today, during Christ's time, it would have meant simply "a rising up" or "awakening." It was used to indicate someone standing up especially when awakening from sleep.

The Greek preposition translated as "of" means "out of" or "from." In Greek, they use the genitive case instead of a preposition for the types of phrases with usually use with "of."

The word translated as "the dead" means "corpse", "a dying man," and "inanimate, non-organic matter." Christ uses it in all three senses, referring to the actual dead, the spiritually dead, and inanimate matter. Since it is singular without the article ("the"), the sense might be more like "death".

"Neither" is a Greek conjunction that means "and not," and "neither/nor" when used in a series.

The word translated as "marry" means, for a man, "to take a wife" and for a woman, to "give yourself in marriage."  It is the verb form of the noun meaning "wedding" so "wed" is closer.

"Nor" is a Greek conjunction that means "and not," and "neither/nor" when used in a series.

The verb translated as "given in marriage" is doesn't appear in anywhere else in Greek other than the Bible. It seems to be an invented word, adding a different verb ending to the verb that means "marry". This is like our adding "ize" to the end of a word to make it a verb. The root word means "wedding" so this is like "weddize."