Woe to you

Woe -- "Woe" is an exclamation of grief, meaning "woe" or "alas." Jesus uses it humorously. Today we would say "so sad for you" or "boo-hoo to you." The word is very like the Jewish, "oy vey" which can be used to express sorrow but is more commonly used cynically. More about this phrase in this article on Christ's humor using exaggeration.

unto -- 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.

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

experts in-- (IP) There is nothing that can be translated as this phrase in the Greek source.

the -- 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. 

law - - (CW) The Greek word translated as "lawyers" means "relating to laws", "legals," "relating to points of law", "forensic", "conventional", "lawyer", "notary", and "legal advisor". This word doesn't precisely mean "law."

because -- The word translated as "because " 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.

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

have -- (WT) This helping verb "have" indicates that the verb is the tense indicating an action completed in the past. This is not the tense of the verb here.

taken away -- "Taken away" is one of Christ's favorite "multiple meaning" words. It is a verb that means "to raise up," "elevate," "to bear," "to carry off," "to take and apply to any use," "lifted" in the sense of "removed," and "to cause to cease." Jesus uses this verb to refer to what will happen to "the son of man," which can apply either to his being raised from the dead or lifted up on the cross. The verb also came to mean "remove" in the same way we describe stealing as "shoplifting."

the -- 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. 

key - - (WW) "Key" is a noun that describes "that which serves for closing," meaning the devices that holds a door closed. It means " a bar", "a bolt", "a catch," and "a hook." Later, it came to mean "key" but in the sense of something that holds something shut rather than opens something. This word doesn't mean "key." 

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

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. MW - Missing Word -- The word "the/this" before "knowledge" is not shown in the English translation.

knowledge: - -The Greek word translated as "knowledge" means "seeking to know", "inquiry", "investigation", "result of investigation", "decision", "higher, esoteric knowledge", "acquaintance with" a person, "recognizing", "means of knowing", "being known", " means of knowing": hence, "statement in writing".

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

yourselves-"Yourselves" is the nominative case of the third-person, plural adjective that means "themselves," "ourselves,""yourselves," "the same," "one's true self," and "the soul" as opposed to the body. While other forms of this word are used as pronouns, this form is used for emphasis, since the subject pronoun is part of the verb. Without a verb, the sense is "they are."

have -- (WT) This helping verb "have" indicates that the verb is the tense indicating an action completed in the past. This is not the tense of the verb here.

entered  -- "Entered" is a word that means "enter," "go or come into" of an accuse "come into court," and has the double meaning of "coming into one's mind."

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.

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

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

have -- (WT) This helping verb "have" indicates that the verb is the tense indicating an action completed in the past. This is not the tense of the verb here.

hindered.   - "Hindered" is from a verb that means "to hinder" and "to prevent."

those -- The word translated as "those " 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. 

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.

were -- (WT) This helping verb "were" indicates that the verb is passive. Helping or auxiliary verbs are needed to translate the Greek verb forms into English. This helping verb indicates the past tense of the verb. This verb is in the present tense so "are" is correct. 

entering-- "Entering" is a word that means "enter," "go or come into" of an accuse "come into court," and has the double meaning of "coming into one's mind."