For   - --The word translated as "for" introduces a reason or explanation so "because" and, in questions, "why." However, since this word always appears in the second position, it is more like an aside remark like, "consequently" or "as a cause."

whoever - The word translated as "whoever" is from the Greek article, "the," (masculine, singular) which usually precedes a noun and, without a noun, takes the meaning of "the one."

missing "when"  -- (MW) The untranslated word means "if might" indicates more of an expectation of something happening than "if" alone. This is often how we use the word "when."

will -- (CW) The word translated as "will" expresses consent and even delight in doing something.It is not the same as the helper verb "will" in English, which primarily expresses the future tense. The form indicates something that "might" happen, which is assumed with the "when."

save  - (WF) The second "save" verb is a present infinitive "to be preserved from death" or "keep alive." 

his -- The word translated as "his" is the Greek word commonly translated as third-person pronouns in English.  This pronoun follows the noun so "of his."

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. 

life  --The word translated here as "soul" is psyche, a common word in Greek, familiar in English, meaning "life," "soul," "consciousness," and "a sense of self." Jesus uses it to specifically mean our identity in our worldly life, the role we play on earth, what we might call the "social self," or what we commonly call our "ego."  See this article for detail about this word and related words.

shall -- 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.

lose  - "Lose" is a very strong form of "to destroy," "to kill," "to slay," and "to lose." It means "to destroy utterly." It is in the future tense, unlike the "desire to save from death" phrase that begins the verse. 

it:  - "It" is autos, which means "the same," and the reflexive pronouns, "myself," "yourself," "himself," "herself," "itself," or the oblique case of the pronouns, "him," "her," and "it."

and  - (WW) The Greek word translated as "and" 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.  

whoever - The word translated as "whoever" is from the Greek article, "the," (masculine, singular) which usually precedes a noun and, without a noun, takes the meaning of "the one."

missing "when"  -- (MW) The untranslated word means "if might" indicates more of an expectation of something happening than "if" alone. This is often how we use the word "when."

will -- (CW) This helping verb "will" does not indicate the future tense, but that the verb describes a possibility, the subjunctive voice. A "might" or "should" in English is more appropriate, but is assumed in an "if/when/whoever/except" clause. Helping verbs are not needed in Greek since the main verb carries this information in its form but in this case, it is implied by the "when" that wasn't translated.

lose  - "Lose" is a very strong form of "to destroy," "to kill," "to slay," and "to lose." It means "to destroy utterly." It is in the future tense, unlike the "desire to save from death" phrase that begins the verse. 

his -- The word translated as "his" is the Greek word commonly translated as third-person pronouns in English.  This pronoun follows the noun so "of his."

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. 

life  --The word translated here as "soul" is psyche, a common word in Greek, familiar in English, meaning "life," "soul," "consciousness," and "a sense of self." Jesus uses it to specifically mean our identity in our worldly life, the role we play on earth, what we might call the "social self," or what we commonly call our "ego."  See this article for detail about this word and related words.

for -- The form of the pronoun "my" requires the addition of extra words in English to capture its meaning.  The most common is the "of" of possession, but it can also mean "belonging to," "part of," "which is," "than" (in comparisons), or  "for," "concerning" or "about" with transitive verbs.

my  - The "my" is the possessive pronoun, so "my," "of me," or "mine."

sake -- This preposition means "on account of," "as far as regards," "in consequence of," and "because." This proposition is usually paired with the noun "sake" in English. The word translated as "sake" means "on account of," "because," and "in consequence of."

shall -- 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.

find  - The term used for "shall find" is the source of our word, "heuristic," meaning enabling a person to find out something for themselves. It means "find out" and "discover." It is in the future tense. 

it. - "It" is autos, which means "the same," and the reflexive pronouns, "myself," "yourself," "himself," "herself," "itself," or the oblique case of the pronouns, "him," "her," and "it."