Luke 12:41 refers to "a parable" spoken BEFORE the prediction Christ makes about the FUTURE in Luke 12:45.
Vs 42-54 is pure Gospel preaching that includes a prediction about the future judgment of all mankind.
The servants of Christ are given much and much is required of them. If they do not follow as Christ directs they are to be assigned a place WITH UNBELIEVERS. They recieve MANY lashes in that torment while those who did not know as much receive FEW by comparion. The notion of "infinite torture for ALL" is not here "at all".
36 ""Be like men who are waiting for their master when he returns from the wedding feast, so that they may immediately open the door to him when he comes and knocks.
37 ""Blessed are those slaves whom the master will find on the alert when he comes; truly I say to you, that he will gird himself to serve, and have them recline at the table, and will come up and wait on them.
38 "" Whether he comes in the second watch, or even in the third, and finds them so, blessed are those slaves.
39 "" But be sure of this, that if the head of the house had known at what hour the thief was coming, he would not have allowed his house to be broken into.
40 "" You too, be ready; for the Son of Man is coming at an hour that you do not expect.''
41 Peter said, ""Lord, are You addressing this parable to us, or to everyone else as well?''
42 And the Lord said, "" Who then is the faithful and sensible steward, whom his master will put in charge of his servants, to give them their rations at the proper time?
43 ""Blessed is that slave whom his master finds so doing when he comes.
44 ""Truly I say to you that he will put him in charge of all his possessions.
45 ""But if that slave says in his heart, "My master will be a long time in coming,' and begins to beat the slaves, both men and women, and to eat and drink and get drunk;
46 the master of that slave will come on a day when he does not expect him and at an hour he does not know, and will cut him in pieces, and assign him a place with the unbelievers.
47 ""And that slave who knew his master's will and did not get ready or act in accord with his will, will receive many lashes,
48 but the one who did not know it, and committed deeds worthy of a flogging, will receive but few. From everyone who has been given much, much will be required; and to whom they entrusted much, of him they will ask all the more.
49 ""I have come to cast fire upon the earth; and how I wish it were already kindled!