I found this somewhere and, unfortunately, don't remember who wrote it or where I found it so I can't attribute it properly. I found it interesting and a bit thought-provoking. Hopefully it will be an interesting read.
"Then Peter said, "Lord, are you saying this parable to us only, or also to all?" And Jesus said, "Who really is the faithful and discreet slave whom his master set down over his household to give them their food in due season?" (Luke 12:41, 42; Matthew 24:45)
All Jesus did was ask a question. Who really is...? Then, Jesus ANSWERS that question.
"Happy is that slave when his master UPON ARRIVING finds him doing so. Amen I say to you, he will appoint him over all his belongings." (Matthew 24:46, 47; Luke 12:43, 44)
Has the Master arrived yet? (Matthew 24:30; 1 Corinthians 11:26) The 'faithful and discreet servant' has not and WILL NOT be 'identified' until the Master arrives. Why do we have to wait until the Master arrives? Jesus answers that too.
"But if ever that evil slave should say in his heart 'My master is delaying' and should start to beat his fellow slaves and should eat and drink with the drunkards; the master of that slave will come on a day that he does not expect and at an hour that he does not know, and will cut him in two and will assign him with the hypocrites. There is where the weeping and the gnashing of his teeth will be." (Matthew 24:48-51; Luke 12:45, 46)
Jesus said the faithful slave could become wicked at ANYTIME. He doesn't say out in the open, but he says in his HEART 'My master is delaying.' No one can really know he is a wicked slave until the Master comes. Hence, if the slave is faithful even until the master returns (whenever he returns), he really is faithful. So no one will know who the faithful slave is (if there even is one) until the master arrives.
Further... They tell you that the faithful and discreet slave is the "mouthpiece" of God on earth. Is this true?
"God, who long ago on many occasions and in many ways spoke to our fathers by the mouth of the prophets has at the end of these days spoken to us by the mouth of a Son, whom he appointed heir of all things, through whom also he made the system of things." (Hebrews 1:1, 2)
God in the past spoke to our forefathers by means of the prophets, not an organization. The prophets on earth served as his mouthpiece to his people. In these last days, God speaks to us by the mouth of a Son. So the Son is God's "mouthpiece" today. How does the Son speak to us?
"My sheep hear my voice, and I know them and they follow me." (John 10:27)
"I have other sheep that are not of this fold, those also I must bring in, and they will LISTEN TO MY VOICE, and they shall become one flock with one shepherd." (John 10:16)
From where do they listen to his voice? Is it through an organization? From the Bible? The scriptures say:
"See that you do not beg off from him who is speaking. For if they did not escape who begged off from him who gave divine warning upon the earth, much more so we if we beg off from him who speaks FROM THE HEAVENS." (Hebrews 12:25).
So God speaks to us today by the mouth of his Son not through an organization, nor through the Bible... but directly "from the heavens."