Note 5 at Lk. 13:28: This passage is speaking of judgment and applies to all who reject God's salvation through Jesus. However, in context, the specific application is to these Jews and the Jewish nation. Jesus is saying that Abraham, Isaac, Jacob, and the prophets would be in the kingdom of God, but they wouldn't. These Jews thought they would be saved because they were Jews. They were trusting in their genealogy and not in a Savior. They thought they would obtain salvation by natural birth and were ignorant of the new birth (see note 2 at Jn. 3:3, p. 48).

Verse 29 goes on to speak of people coming from the east, the west, the north, and the south and entering into the kingdom of God. This is a reference to the Gentiles being granted admission into the kingdom of God (see note 2 at Lk. 2:32, p. 22; see note 45 at Mt. 6:32, p. 83) and it infuriated these Jews. As explained in note 4 at verse 26, page 282, they believed they would be saved by association with God as His chosen people and they couldn't accept that anyone who wasn't a Jew could make it.

The statement in verse 30 about the last being first is also in reference to the Gentiles and Jews. The Jewish nation was first in the sense that they were given the covenants and the greater opportunity to know God. But they would become the last in the sense that they rejected Jesus as their Messiah; salvation would be taken from them and given to the Gentiles (Rom. 11:11).