Matthew chapter 20 has the parable of the vineyard owner. At the 11th hour of the 12 hour work day, the owner (God) asks the men in the marketplace why they've been idle all day, and they say “Because no one would hire us”

The scorching heat refers to tribulation, which the 11th hour workers miss

To have the names of Jesus & God written on one is to have taken on their divine character. Revelation 3:12, 14:1

Only the overcomers from Philadelphia have the name of new Jerusalem upon them, and new Jerusalem “is adorned as a bride for her husband” when it comes out of heaven; they are the bride of the Lamb. Revelation 3:12, 21:2