Now your getting it. All scripture will harmonise if received with this understanding. Many called (the elect) but few chosen (the elect). The wide gate (the elect) and the strait gate (the elect), Matt 7:13-14. And many other scriptures that teach the same thing.
Actually Forest, Willis doesn't get it, his intent is to be sarcastic and act confused in order to smear the PBs. His kind are similar to the Jews or the JWs, they intensely desire the vindication they believe will be their's when there will only be a very very few that will 'make it' to heaven, all the while dead certain that they themselves are included in those few that 'make it'.
You're dead spot on with your take of the above passage, but that is one of their foremost primary heaven or hell passages that they rely on to show only a very very few will 'make it' to heaven, and heaven and hell aren't even mentioned, they must force it into the passage.
Many were redeemed out of Egypt by the blood of the lamb, very very very few 'made it' into the land of milk & honey, the sabbath rest of God.