What are we to make of that?
Even though the apostles ask Jesus to increase their faith they’re still over-estimating the size of the faith that they do have. They think they have faith but Jesus raises the bar, he raises the standard; “were your faith the size of a mustard seed you could say to this tree, be uprooted and planted in the sea, and it would obey you.” Jesus is telling them that their faith is not even the size of a mustard seed!
In the second piece they’re over estimating their goodness. So Jesus tells the story of the servant who having worked hard all day in the fields is then expected to make himself tidy, lay his master’s supper and wait on him before he eats himself… and he is then required to say; no big deal, I’m merely a servant. Again he’s raising the standard… it feels like injustice.
All this means:
If we stroll up to Heaven thinking that we’ve both faith and goodness “to beat the band” we’ll be in trouble because God’s standard is so much higher.
If we approach Heaven humbly, relying on Gods mercy rather than our sense of our faith and goodness – which is almost always inflated and an expression of the human ego – we’ll have a much better chance of gaining entry.