Rise, - -- (WW) The word for "rise" means "awaken" and is the same word Christ uses to describe God raising the dead and false prophets arising. The verb means to wake others, but in the passive or middle form, which is hte form here, it means "wake yourselves" or "wake up." It could be a command as the KJV has it, "Wake up!" or it could be a simple statement, "You are all waking." This is not the Greek word Jesus uses for "rise" or "raise." It could be a command as the KJV has it or it could be a simple statement, "You are all awake."

let -- (WW) There is no Greek word that can be translated as "let" in the Greek source. Since the verb is a subjective, however, a "might" or "should" would work.

us -- (WF) This is from the first-person plural form of the verb, but the form is as a subject, "we" not an object "us."

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

going;-- "Going" is a Greek word which means "to lead", "to carry," or "to fetch" and has a lot of different specific meanings in different contexts. Though it looks like a command in the KJV, it is not. It is a statement about what might or should happen now.

behold,  - "Behold" is from an adverb meaning "Lo! Behold!" and "See there!" In a humorous vein, this about how Christ uses this like we use the phrase "ta-da" in a magic show, or "voila" in French which means "see there". "Look here!" or "See there!" comes closest in English.

he -- This is from the third-person, singular form of the verb.

is -- (WT) This helping verb indicates the present tense of the verb, but the verb is not the present tense by the past perfect.

at hand  - The word translated as "at hand" is the verb form of an adverb "near" in space, time, and relationships. In English, we would say "nears" or, in the form here, "has neared," doesn't quite work so perhaps "has gotten close" or, in the case of time, "is nearly here."

that -- The word translated as "that" is the Greek definite article, without a noun, it has the sense of "the one." The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those") than the English "the." See this article for more. 

doth betray -- (WF, WW)"Doth betray" is a compound word that literally means "to give over." It has nothing to do with "betray." There is no "that" here. The form is an adjective, "giving over", used as a noun, "the one turning me over." In English, we would say, "the one turning me over."

me. -- "Me" is the regular first-person pronoun in Greek as the object of the verb or preposition.