Here is the patience of the saints (Hōde hē hupomonē tōn hagiōn estin). John’s own comment as in Rev 13:10; Rev 17:9. In this struggle against emperor worship lay their opportunity (Rom 5:3). It was a test of loyalty to Christ.
They that keep (hoi tērountes). In apposition with tōn hagiōn (genitive), though nominative, a frequent anacoluthon in this book (Rev 2:20, etc.). Cf. Rev 12:17.
The faith of Jesus (tēn pistin Iēsou). “The faith in Jesus” (objective genitive) as in Rev 2:13; Mar 11:22; Jam 2:1.