From a lengthy genealogy arises an important truth: What God has promised, God will do.
One job/command. All the others are variations on the same theme.
In Revelation 14, the Lamb makes another appearance, as do the 144,000 -- followers of the Lamb.
If you want a condensed overview of the Book of Revelation, chapter 12 is the place to go.
Jesus's life and teaching challenges us to live our lives with faithful peculiarity.