The apostles said to the Lord, ‘Increase our faith!’ The Lord replied, "If you had faith the size of a mustard seed, you could say to this mulberry tree, 'Be uprooted and planted in the sea', and it would obey you.Part of why I struggled with it is because it didn't seem to fit with where the text had come from or where it was going. I apppreciate a flow to the narrative, and this whole section titled "sayings of Jesus" just really doesn't seem to go with the preceding parables, or even the story about the ten lepers that follows. I was smelling an argument for Q, and I hate Q. I don't believe in Q. To put it bluntly, I think that Q is, as a professor of mine once said, "a figment of the scholarly imagination." I tend to believe that people wrote what they said they wrote.
"Who among you would say to your slave who has just come in from ploughing or tending sheep in the field, 'Come here at once and take your place at the table'? Would you not rather say to him, 'Prepare supper for me, put on your apron and serve me while I eat and drink; later you may eat and drink'? Do you thank the slave for doing what was commanded? So you also, when you have done all that you were ordered to do, say, 'We are worthless slaves; we have done only what we ought to have done!'"
And besides: Luke seems to be a fairly smart dude. Even if he stumbled across some document that had a bunch of random "sayings of Jesus", are we to believe that he just randomly crammed them in somewhere that made no sense whatsoever, because he didn't have a better idea of what to do with them? Like he or anyone else didn't give the final draft a once-over before shipping it off to Theophilus? I think not.