If -- (CW) The "if" here is used to express conditions "if" (implying nothing about its fulfillment) or indirect and direct questions, "whether”. It also means "if ever" and "whenever". When used in an "if" clause, the verb is the subjunctive form of possibility. When citing a fact the sense is more "whether”, "since" or "as sure as”. The verb is not subjunctive, which means it is citing a fact. This word doesn't mean "if" with this form of verb. 

therefore -- The Greek word translated as "therefore" either emphasizes the truth of something ("certainly”, "really") or it simply continues an existing narrative, "then”, "therefore”. Jesus uses it to respond positively to questions, but in parables, it can continue the story.

ye -- This is from the second-person, plural form of the verb.

have -- (WT) This helping verb "have" indicates that the verb is the tense indicating an action completed in the past. This is not the tense of the verb here. 

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. When a negative precedes the verb, it affects the whole clause. When it precedes other words, its force is limited to those words. 

been -- (WW) The word translated as "ye have...been" means "to become”, that is, to enter into a new state. When applied to events, this word means "to happen”, "to occur” or "take place”. Sometimes, "arises" works best when the subject comes into being. For things, it can be "to be produced”. When the participle takes a predicate, the sense is "coming into" something. The form of the verb's object can indicate the time or to whom it "happens”. 

 faithful  -- The word translated as "faithful" means "trusting" and "trustworthy”.

in  -- The word translated as "in" means "in”, "on”, "within”, "with" (an instrument), "by" (near), "by" (means of), "during" (time), or "among" with an indirect-object form object.  About time, it means "during the time”, "in the time”, "within” and "in”. With the direct object form, it means "into”, "on” and "for”. When referring to time, it means "during". It can mean "on”, "at” or "by" in the sense of "near”.

the   -- The word translated as "the" is the Greek definite article, "the” which usually precedes a noun or changes the word it precedes (adjective, infinitive, participle, etc.) to act like a noun. The Greek article is much closer to our demonstrative pronouns ("this”, "that”, "these”, "those") than the English "the". See this article for more. 

unrighteous -- The Greek word translated as "unrighteous" is from an adjective that means  "unrighteous”, unjust”, "obstinate", "unmanageable", "unjust", "unrighteous” [of things] and "one who plays unfairly”. In modern terms, we would say "unfair". The noun form means "injustice".  It is the negative of the Greek word usually translated as "righteous”, which has the sense of "virtue”.

mammon,---  "Mammon" is not from any Greek word, but it is a foreign (non_Greek) word that is written in Greek letters. As such, usually, it should not be translated but written out in English letters. The KJV follows this practice, other biblical versions do not.  There is some debate about both its source and its meaning. The Aramaic source words mean "wealth" and "money”, but Jesus readily uses the Greek words for wealth and money or a personification of them, like a pagan god.  From the context in which he uses it, Jesus often seems to used it to refer to ill-gotten gains, that is, plunder or loot.

who --  The Greek word translated as "who" in the singular means "anyone”, "someone”,  "something” and "anything”, The same forms are used both for the masculine and feminine, so "anyone" works best for a person. In the plural, it means "everyone”, "some”, "they” and "those”. Jesus often uses it to start a question so it means "who", "what”, "which” or even "why”.  This is not the word usually translated as "who”.

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

commit  -- (CW) The Greek word translated as "commit...trust" means trusting or relying upon other people, especially their words. Jesus usually uses it in contexts that apply to trusting words. See this article. This translation is more specific than the word's meaning. 

to -- This word "to" comes from the indirect object form of the following word that 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.

your  -- (WF) The Greek pronoun "you" here is plural and in the form of an indirect object, "to you”, "for you”, etc. This is not a possessive but an indirect object.

trust - This completes the meaning of the verb. It is from the prefix.

the -- The word translated as "the" is the Greek definite article, "the”, which usually precedes a noun or changes the word it precedes (adjective, infinitive, participle, etc.) to act like a noun. The Greek article is much closer to our demonstrative pronouns ("this”, "that”, "these”, "those") than the English "the”. See this article for more. 

 true  - - "True" is an adjective that means "truthful" and "trustworthy" when applied to a person, "true" and "genuine" when applied to objects and as an adverb "really" and honestly". "The true" appears before the final phrase as a comment before the final phrase.

riches?  --(IW)There is no "riches" in the phrase. The verb "trust" refers to trusting people or their words. It doesn't take objects in this way, but since the word doesn't exist, that doesn't matter.