Verily, verily, -- The word translated as "verily" is from the Hebrew word that means "truly" or "certainly," but it sounds like the Greek word with the same meaning. In Greek, the word also means "to reap." See this article discussing this "amen phrase."

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

say -- The word translated as "say" is the most common word that means "to say," and "to speak," but it also means "to teach," which seems to be the way Christ uses it more frequently. 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." Christ usually uses this word to refer to his own speaking or teaching.

unto -- This word "unto" comes from the dative case of the following word that requires the addition of a preposition in English, but the translator must decide which preposition to use: a "to" as an indirect object.

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

Except -- (WW) "Except" is from the Greek word meaning "when" indicates more of an expectation of something happening than "if" alone. This is how we use the word "when."

missing "doesn't want"  -- (MW) The untranslated negative used here is the Greek negative of a subjective opinion, commands, and requests. The sense is that "you don't want" or "think" something, not that it isn't done or thought.   With the verb "to be," the sense is "doesn't seem." When a negative precedes the verb, it affects the whole clause. "When he doesn't want" does not mean "except."

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.

man -- (CW) The Greek word translated as "man" in the singular means "anyone," "someone,"  "something," and "anything." In the plural, it means "some," "they," and "those."

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.

born  - The Greek word translated a "born" has a primary meaning of being "begotten," but it means being created or produced generally. It is the same word used to give Christ's genealogy in Matthew. Importantly, however, the verb is in the aorist form, meaning it describes an action at some point of time, past, present, or future.

of  -- (CW) The Greek preposition translated as "of" means "out of" or "from." In Greek, they use the genitive case instead of a proposition for the types of phrases usually use with "of."

water  -- "Water" is the noun that means "water," "spring water," "drinking water," "rain water," "rain," "time running out" (from the water clocks used in courts),  "liquid," the constellation Aquarius, the winter solstice, and a place with mineral waters.

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

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. However, this form more likely issued because this is the object of the "from" preposition above.

the -- (IW) There is nothing in the Greek that can be translated as "the" in the Greek source.

Spirit, -- The word translated as "spirit" primarily means "breath," "wind," a "non-material being," and "blast." Like "spirit" in English, it can also mean "attitude" or "motivation.' It also means the "breath of life," from which we get to "spirit" and "spiritual."

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

can- (CW) This word "can" has more the sense of having a specific ability or power rather than the kind of helping verb "can" is in English. Jesus always uses it in the verb and noun forms to refer to power. Christ is explaining his power of seeing what the Father does, which he says more directly in John 5:19.

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."

enter  - -- "Enter" is a word that means "go or come into" and has the double meaning of "coming into one's mind."

into  -- The word translated as "into" means "into" a place, "towards" as a direction, "in regards to" a subject, and "up to" limits in time and measure.

the -- The word translated as "the" 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. 

kingdom  - The Greek word translated as "kingdom" also means "reign" or "dominion." It often seems that Christ uses it to refer to the rules or laws that God, as the ruler, lays down. A kingdom is where the rules made by a certain ruler are in effect.

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"  -- (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. 

God. - -- The word translated as "God" means "God" and "deity." It is introduced with an article, so "the God," "the Divine" or "the divine one." Jesus often uses it this way perhaps to indicate the one God as opposed to the pagan gods.