And I -- -- This is from a contraction of the conjunction "and" and the subject pronoun "I". Since the verb is already in the first person, that addition of the pronoun is like saying "and I myself," emphasizing the first- person speaker.  "I" is -ego, which is the first-person singular pronoun meaning "I." It also means "I at least," "for my part," "indeed," and "for myself."

missing "myself" -- (MW)  The subjective pronoun repeats the information in the verb so it should be repeated in English like "I myself."

will -- This helping verb "will" indicates that the verb is the future tense. However, the verb could also be  in the form of possibility where a "might" or "should" is the helping verb. Helping or auxiliary verbs are needed to translate the Greek verb forms into English.

pray   -- (WW) The word translated as "pray" means "to ask"  "to beg," or "to question."  It means to "ask about a thing" or "the question a person." It is different from the "ask" in John 14:14, which means to ask for something.

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. 

Father, -- "Father" is the Greek noun that means "father" or any male ancestor so "forefathers." It is the word that Christ uses to address his own Father.

and -- The Greek word translated as "and" is used as the conjunction "and," but it also is used to add emphasis ("also"). In a series, it is can be translated as "not only...but also." After words implying sameness "as."

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

shall -- (CW) This helping verb "shall" indicates that the verb is the future tense. Helping or auxiliary verbs are needed to translate the Greek verb forms into English. This is a little confusing because the helping verb "will" was used above.

give -- The verb translated as "given" means "to give," "to grant," "to hand over," "appoint," "establish," and "to describe." It is almost always translated as some form of "give."

you  -- The Greek pronoun "you" here is plural and in the form of an indirect object, "to you," "for you," etc. As the object of a preposition, this form implies no movement, but in a fixed position or events occur at a specified time or while the action was being performed.

another --  The word translated as "another" means "another," "one besides," "of another sort," "different," "other than what is true," "as well," "besides," with numerals: "yet," "still," "further."  In a series, this means "one...another."

Comforter, -- "Comforter" is an adjective that means "called to one's aid", "assisting in legal matters", "acting as an advocate", and "summoned."

that  -- The word translated as "that" is a conjunction that starts a subordinate clause  "that," "when," "in order that" or "because." -- The word translated as "there" is an adverb "in that place," "there," "where," or "when."

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

may -- This helping verb "may" indicates that the verb indicates a possibility, the subjunctive. Helping or auxiliary verbs are needed to translate the Greek verb forms into English.

abide -- (OS) The verb "abide" here was a different verb in the KJV source. Today this verb "be" here is the common form of "to be" in Greek. It means to have a certain characteristic or remain in a certain condition. It also equates terms or assigns characteristics. With the genitive object, the sense is "belongs to." The word also means "to exist" and where it doesn't connect to characteristics or conditions.

with -- "With" is the Greek word that usually means "with" or a related concept such as "among" or "by the means of." It also refers to "after" or "behind" when referring to a place, time, or pursuit.

you -- The word translated as "your" is a plural, second-person pronoun in the genitive case. This pronoun follows the noun so the possessive "of yours." Here, it is the object of the previous preposition. As an object of a preposition, the genitive indicates movement away or a position away from something.

for --  (WW) The word translated as "for" means "into" a place, "towards" as a direction, "as much as (of measure or limit)," "in regards to" a subject, "up to" limits in time and measure, and "for" a purpose or object. Here, it refers to time so "until."

missing "the/this"  -- (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," and "those"). See this article for more. 

ever; -- (CW) "Ever" is from aiôn, which means "lifetime," "life," "a space of time," "an age," an epoch," and "the present world."  See this article on the phrase translated as "forever."