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.

I -- The pronoun "I" is used here. Since, as the subject of the sentence, it is part of the verb, its explicit use accentuates who is speaking "I." Saying "I myself" captures this feeling in English.

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

receive  -- -- The word translated as "receive" primarily means "take." However, it means "receive" in the same sense that we use "get" to mean "receive" and has many different uses as we use "get" in English. Among these are the ideas of "understanding" and "possessing." However, here it is a play on words.

not  -- (WP)  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. It does not negate the verb here, but the phrase, "not from a man."

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.  Here it would have the sense of "this."

testimony - (CW) "Testimony" is from a Greek word that means "testimony" and "evidence." This is confusing here because the KJV has been translating this words as "witness" until here.

from -- The Greek preposition translated as "from" has many meanings, many of which depend on the case of its object. With the genitive, used here, the sense is motion, "from the side of," "from beside," and generally "from."

man: -- The Greek word for "man" means "man," "person" and "humanity" in the singular. In the plural, it means "men," "people," and "peoples." 

but -- (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."

these -- The "these" is a pronoun that can mean "this" or "that," the nearer or the further depending on usage. It is often used in the neuter plural to refer to "these things." As an adverb it can mean "therefore" and "that is why."

things  - There is no word, "things," in the Greek source, but this word comes from the neuter, plural form of the previous adjective.

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

say, -- The word translated as "I say" is the most common word that means "to say," and "to speak,"  but when used with an objective noun or pronoun, the sense is "say of" or "speak of."

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

ye -- The pronoun "you" is used explicitly as the subject of the sentence. Since it is already part of the verb, its use here creates emphasis on the "you" as we might say "you yourselves." It is plural.

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

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

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.

saved. -- "Saved" is the Greek word that means "to keep alive" when applied to people or "to keep safe" when applied to things. Jesus uses it to mean "rescue" in most cases.