Behold, -- "Behold" is a verbal command meaning "See!" and "Look!" It is from the most common word meaning "to see" in Greek. In a humorous vein, it is also an adverbial exclamation 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. Jesus uses it both ways.

your -- The word translated as "your" is a plural, second-person pronoun in the possessive (genitive) case. This pronoun follows the noun so the possessive "of yours." When it precedes a definite article before the word it modifies, the sense may be "yours" or "part of you."

missing "the/this"  -- (MW) The untranslated word is the Greek definite article," the," which usually precedes a noun or changes the word it precedes (adjective, infinitive, participle, etc.) to act like a noun. The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," and "those"). See this article for more.

house - The Greek word translated as "house," is any dwelling place but not exclusively a separate house. It means the household or clan that lives in the building as well. The English word "house" captures the idea of a "ruling family" so that works well for this word. The female form of the word has more the feel of "home."

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

left -- The word translated as "left" primarily means "to let go," "to leave," "let loose," or "to send away."  It can also mean "remit" a debt or "excuse" a fault. It has the sense of leaving something alone and letting it drop. See this article for more.

to -- This word "to" 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.

you -- The Greek pronoun "you" here is plural and in the form of an indirect object, "to you," "for you," etc.

desolate: -- (IW) This word is not in the Greek source.

missing "but"  -- (MW) The untranslated word  "but" means "but," "yet," "however," and "on the other hand." It joins phrases in an adversarial way. Since it always falls in the second position, translating it as "however" often captures its feeling better.

I -- This is from the first-person, singular form of the verb.

tell-- The word translated as "I tell" is the most common word that means "to say," "to tell," and "to speak,"  but when used with an objective noun or pronoun, the sense is "say of" or "speak of."    It also has many ancillary meanings such as "to count" ("to number" or like we might say, "to recount" a story) or "to choose for yourself."

you -- The Greek pronoun "you" here is plural and in the form of an indirect object, "to you," "for you," etc.

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

will  -- (WT) This helping verb "will" indicates the future tense, but the verb is not the future.

missing "should" or "might"-- (WF) A helping verb is necessary because the following verb is a verb of possibility, a subjunctive, something that "should" or "might" occur.

not -- (CW) The "not" here is both of the Greek negatives used together. Greek has two negatives, one objective, one subjective. The use of both together is more extreme, like saying, "never" or literally, "you cannot really think." When a negative precedes the verb, it affects the whole clause. When it precedes other words, its force is limited to those words.

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." In the past perfect tense, it means "to know," and that sense of knowing gives this word a sense of seeing and understanding. 

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

again -- (IW) This word is not in the Greek source.

until -- The word translated as "until" means "until" but it also means "till," "while," "as long as," "as far as," "up to the point," "in order that."

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

missing "should" or "might"-- (WF) A helping verb is necessary because the following verb is a verb of possibility, a subjunctive, something that "should" or "might" occur.

say, - The word translated as "say" means "to say" and "to speak." It is one of the two most common words translated "speak," "say" and "tell," but it has more a sense of addressing and proclaiming.

Blessed -- (CW)  "Blessed" is from a verb that means to "speak well of," "praise." and "honor." Amusingly, this is a Hebrew euphemism for "cursed," reversing its normal meaning. This is not the word used in the Beatitudes ("Blessed are the poor..."). This is not the specific meaning of the word in this situation.

is -- There is no verb "is" here in the Greek source but it is implied by the noun in the form of a subject having no verb associated with it.

he -- (WW) The word translated as "the" is the Greek definite article, "the," which usually precedes a noun or changes the word it precedes (adjective, infinitive, participle, etc.) to act like a noun. The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those") than the English "the." See this article for more.  This word doesn't mean "he." 

who -- (IW) This word is not in the Greek source. It was added because the next verb was translated as active rather than as a participle.

cometh -- (WF) The word translated as "come" primarily means "to start out" but Jesus 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." Technically, it is in the middle voice meaning the subject acts on himself. In English, this is assumed in our words "come" and "go." Our English word "show up" captures both the "start" and "come" ideas. See this article for more. This is not an active verb but a participle, a verbal adjective, "word."

in   -- The word translated as "in" means "in," "on," "within," "with" (an instrument), "by" (near), "by" (means of), "during" (time),  or "among"  with an indirect-object form object.  About time, it means "during the time," "in the time," "within," and "in." With the direct object form, it means "into," "on," and "for." When referring to time, it means "during." It can mean "on," "at," or "by" in the sense of "near."

the -- (IW) This word is not in the Greek source.

name -- The Greek word translated as "name" is much more complicated than it might at first appear. It can simply mean a "name" as it does in English, but it doesn't mean the things themselves, but what people call it. For example, it can mean a "false name," or "a pretense" as we say "this is a marriage in name only." It can also mean representing another person's authority, as we say, "he is acting in the name of the boss." See this article for more.

of -- This word "of"  comes from the possessive form (genitive case) of the following word that requires the addition of a preposition in English.  The most common is the "of" of possession.

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

Lord. -- The word translated as "lord" means "lord," "master of the house," and "head of the family." It is the specific term for the master of slaves or servants, but it was a common term of respect both for those in authority and who were honored. It was the term people used to address Christ, even though he had no formal authority. Today, we would say "boss" or "chief." For the sake of consistency, this should be the Greek word translated as "master."