Be -- (CW) The word translated as "be" means "to become," that is, to enter into a new state. When applied to events, this word means "to happen," "to occur," or "take place." For things, it can be "to be produced." When the participle takes a predicate, the sense is "coming into" something. The form of the verb's object can indicate the time or to whom it "happens." In English, we say "get ready" not "become ready." This is not the specific meaning of the word in this situation.

ye -- (MW) The pronoun is used here explicitly as the subject of the sentence. Since this information is already in the verb, the sense is repetitive as we say "you yourselves."

therefore -- (OS) There is nothing in the Greek that can be translated as this in the source we use today but it does exist in the source that the KJV translators used.

ready -- Ready" is an adjective that means "at hand," "ready," and of persons, "ready," and "active."

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

for -- The word translated as "for" introduces a statement of fact or cause, "for what," "because," "since," "seeing that," "that," and "wherefore." Jesus usually uses this word to mean "because" in statements that seem like an answer to a question because of the change of context. It means "because" when answering a "why" question and "that" when explaining a "what" question. Another common word is used for "for."

the -- The word translated as "the" is the Greek definite article. The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those"). See this article for more. 

Son -- The word translated as "son" more generally means "child" or "descendant." The phrase "the son of man" is the common way Christ refers to himself. It is discussed in detail in this article. Its sense may be "the child of the man."

of -- This word "of"  comes from the genitive case of the following word that required the addition of a preposition in English.  The most common is the "of" of possession, but it can also mean "belonging to," "part of," "which is," "than" (in comparisons), or  "for," "concerning" or "about" with transitive verbs. 

missing "the"  -- (MW) The untranslated word 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.

man - The Greek word for "man" means "man," "person" and "humanity" in the singular. In the plural, it means "men," "people," and "peoples." 

cometh -- The word translated as "come" primarily means "to start out" but Christ usually uses it to mean "come" but not always. It indicates movement, especially its beginning, without indicating a direction toward or away from anything, so it works either as "start," "come," or "go," but it is more like our phrase "being underway." Our English word "show up" captures both the "start" and "come" ideas. See this article for more.

at -- This word "at" comes from the indirect object form of the following word that requires the addition of a preposition in English. The most common is a "to" for the English indirect object. However, the translator can choose other prepositions: "with,"  "in,"   "of,"  "as," "by," "for," "at," or "on" depending on the context.

an --  (WW) -- The word translated as "an" is a demonstrative pronoun ("this" "that"), but it often acts as a pronoun, "he," "she," "it," "which," "what," "who," "whosoever," "where," "when," "for which reason," and many similar meanings. In the neuter, plural, its sense is "these things."This word doesn't mean "an." 

hour - The word translated as "hour" means a period of time equal to the one-twelfth part of the daylight, like an "hour." More generally, it means a period of time, like a "season."

when -- (IW) This word is not in the Greek source. IW - Inserted Word-- The "word" after "when " doesn't exist in the source.

ye -- This is from the second-person, plural form of the verb.

think -- (CW) The word translated as "think" doesn't mean think as much as it means "expect" or "imagine." This word doesn't precisely mean "think."

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. When a negative precedes the verb, it affects the whole clause. When it precedes other words, its force is limited to those words.