But -- The Greek word translated as "but" means "but," "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.  It can also be an explanation of cause ("so").

they -- This is from the third-person, plural form of the verb.

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.

never --  The "never" 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.

follow -- The verb "follow" means "to follow," or "go with," in a physical sense, but it is also a metaphor meaning "to be guided by" or "to follow the meaning of."

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 -- (WF) "Stranger" is not a noun but an adjective meaning "belonging to another," "foreign," "strange," "hostile," "unfavorably disposed," and "alien." The root of the word is "others." The verb from the same root means "being ill-disposed."  When applied to ideas, the sense is "outlandish." The form is not an object, but that Its form as an indirect object (dative case) that usually 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.

in fact, -- (CW) The Greek word translated as "but" denotes an exception or simple opposition. It is used to emphasize the contrast between things like we use "instead," "but instead,"or "rather." It is not the common word usually translated as "but." It is the Greek word "other" like we use "otherwise." Jesus often uses this conjunction to connect a negative clause, not doing something, with a positive one, "instead do this."

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.

run away -- "Flee" is translated from a Greek word that means "to flee," "escape," and "to take flight."

from-- The word translated as "from" means "from" in both locations and when referring to a source or a cause. It also means the instrument "by" which a thing is done and "away from."

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

because -- The word translated as "for" introduces a statement of fact or cause, "for what," "because," "since," and "wherefore."

they -- This is from the third-person, plural form of the verb.

do -- This English helping verb is used to create questions, commands, negative statements, and smooth word flow in translation from Greek

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. Adding "really" to the sentence captures the same idea. When a negative precedes the verb, it affects the whole clause. When it precedes other words, its force is limited to those words.

recognize  - (CW) The word translated as "recognize" means primarily "to see" and is used to mean "know' as we use the word "see" to mean "know" in English. It is the past perfect tense so "have seen." However, as "know" it is the present tense. The sense is what has been seen in the past is known today. This is not a verb normally translated as "recognize" like several other verbs.

a  -- (WW) The word is the Greek definite article,"the," 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. 

stranger -- (WN) "Stranger" is not a noun but an adjective meaning "belonging to another," "foreign," "strange," "hostile," "unfavorably disposed," and "alien." The root of the word is "others." The verb from the same root means "being ill-disposed."  When applied to ideas, the sense is "outlandish." It acts like a noun with the article introducing it, "the ones strange." The word is plural not singular.

's-- This word "'s"  comes from the genitive case of the previous word that requires the addition of a preposition or this "'s" in English.  The most common is the "of" of possession.

missing "the"  -- (MW) The untranslated word is the Greek definite article,"the," 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. 

voice-- -- The noun translated as "voice"  means "sound", "speech", "voice",  "cry" [of animals], "sounds" [of inanimate objects], and "report."