missing "then"  -- (MW) The untranslated word  "then," "at what time," "at some time or other," "at some unknown time, and "at some time in the future."

They -- The word translated as "they" is the Greek word commonly translated as third-person pronouns in English.  

missing "by/for themselves"-- (WV) A phrase is necessary because the form of the previous verb is a middle voice, which means that the subject is to  act on "themselves," "for themselves" or "by themselves."

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

will -- This helping verb "will" indicates that the verb is the future tense. Helping or auxiliary verbs are needed to translate the Greek verb forms into English.

answer-- This is from the second-person, singular form of the verb."Shall answer" is a verb that means to "set apart," "choose," "answer" a question, "answer charges," and "defend oneself."

saying, - The word translated as "saying" is the most common word that means "to say," and "to speak." It is in the form of a participle, "saying" and "speaking."

Lord,-- This is from the second-person, singular form of the verb.The Greek word translated as "lord," means "having power," "being in authority" and "being in possession of" and means "lord" or "master."

when -- The "when"  is from an adverb meaning "when," "at what time," "at some time or other," "at some unknown time, and "at some time in the future."

did -- This helping verb is used to create questions, commands, negative statements, and smooth word flow in English, but the Greek could be either a question or a statement.

we -- This is from the first-person, plural form of the verb.

see- The verb translated as "see" means "to see" but it is used like we use the word "see" to mean "to know" or "to perceive."

you -- The word translated as "you" is the objective form of the second-person, singular pronoun.

hungry ,  - (WF) The "an hungered" here is the same verb translated as "hungered" in Matthew 25:35, but here it is in the form of an adjective, "hungering."

or -- "Or" is translated from a Greek word that means primarily "or" but serves as "than" in a comparison.

athirst,  - (WF) The word for "thirst" is the same used in Matthew 25:35 that means "to be thirsty" or, more generally, "to want" or "lack" anything. It is in the form of an adjective, "thirsting."

or -- "Or" is translated from a Greek word that means primarily "or" but serves as "than" in a comparison.

a -- There is no indefinite article in Greek, but when a word doesn't have a definite article, the indefinite article can be added in English translation.

stranger,  - "Stranger" is not a common word but a specific noun that means "guest-friend", specifically meaning someone who should receive hospitality. Both Greek and Aramaic traditions offered hospitality to travelers who had no place to stay. The word also means someone that is a "stranger to a thing", "ignorant of a thing", and "unusual". We could include the homeless in this, but perhaps "lost" comes closest to the idea.

or -- "Or" is translated from a Greek word that means primarily "or" but serves as "than" in a comparison.

needing -  -- (IW) There is nothing that can be translated as "needing" in the Greek source.

clothes  - (WW) The word for "naked" means both "naked" and "destitute." It also means bald and beardless.

or -- "Or" is translated from a Greek word that means primarily "or" but serves as "than" in a comparison.

sick,  - The word used for "was sick" is also an uncommon verb despite all of Jesus's work healing, he only uses it once before. It means "to be weak or sickly."

or -- "Or" is translated from a Greek word that means primarily "or" but serves as "than" in a comparison.

in -- The word translated as "in" also means "within," "with," or "among."

prison,  - "Prison" is a word that means a "watcher," "guard," "chain," "keeper," and "a place where people are watched." Jesus uses it to clearly mean prison elsewhere, but the play on words is against the positive way of being "watched over."

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

did -- This helping verb is used to create questions, commands, negative statements, and smooth word flow in English, but the Greek could be either a question or a statement.

not - The Greek word translated as "not" is the Greek negative used to deny objective facts, not opinions. It means "no," "not," or"no truly." It makes a negative statement of fact.

help - The term used here for "help" means "to minister", "to do service," and "to render a service." It is a new term used in this story, used to summarize all the other terms of service. It is first used by Jesus as a description of his purpose on earth. It is a verb from a noun that means "servant" and as an adjective, "servile" and "menial." In Jesus's period, this term was also used to indicate an attendant or official at a temple. It is the source word for the English term "deacon."

you? -- The word for "you" is the indirect object form of the singular, second-person pronoun.