Luke 20:9-18

[Boomerwang]

Hi everyone, so this week we're studying the parable of the vineyard:

⁹He went on to tell the people this parable: "A man planted a vineyard, rented it to some farmers and went away for a long time. ¹⁰At
harvest time he sent a servant to the tenants so they would give him
some of the fruit of the vineyard. But the tenants beat him and sent
him away empty-handed. ¹¹He sent another servant, but that one also they beat and treated shamefully and sent away empty-handed. ¹²He sent still a third, and they wounded him and threw him out. ¹³"Then the owner of the vineyard said, 'What shall I do? I will send my son, whom I love; perhaps they will respect him.' ¹⁴"But
when the tenants saw him, they talked the matter over. 'This is the
heir,' they said. 'Let's kill him, and the inheritance will be ours.' ¹⁵So they threw him out of the vineyard and killed him. "What then will the owner of the vineyard do to them? ¹⁶He
will come and kill those tenants and give the vineyard to others." When
the people heard this, they said, "May this never be!" ¹⁷Jesus looked directly at them and asked, "Then what is the meaning of that which is written:
" 'The stone the builders rejected
has become the capstone^[a]'^[b]? ¹⁸Everyone who falls on that stone will be broken to pieces, but he on whom it falls will be crushed."
Footnotes:

a. Luke 20:17 Or cornerstone
b. Luke 20:17 Psalm 118:22

In particular, last night my small group discussed v.18 at length, and we shared different interpretations. Just wondering, what are your thoughts on this verse - who is being referred to, what does it mean "to fall," "be broken," and "be crushed"?