I believe Jesus was talking about the disciples in that verse.
The Bible tells us about "a great multitude which no one could number, of all nations, tribes, peoples, and tongues, standing before the throne and before the Lamb, clothed with white robes, with palm branches in their hands." (Rev. 7:9) "Then one of the elders answered, saying to me, 'Who are these arrayed in white robes, and where did they come from? And I said to him, 'Sir, you know.' So he said to me, 'These are the ones who come out of the great tribulation, and washed their robes and made them white in the blood of the lamb." (Rev. 7:13-14)
Then throw out everything else Jesus said as irrelevant because He was always talking to His disciples.