KJV: 3 In these lay a great multitude of impotent folk, of blind, halt, withered, waiting for the moving of the water. 4 For an angel went down at a certain season into the pool, and troubled the water: whosoever then first after the troubling of the water stepped in was made whole of whatsoever disease he had. 5 And a certain man was there, which had an infirmity thirty and eight years.
NIV: 3 Here a great number of disabled people used to lie—the blind, the lame, the paralyzed.  5 One who was there had been an invalid for thirty-eight years.
ESV: 3 In these lay a multitude of invalids—blind, lame, and paralyzed. 5 One man was there who had been an invalid for thirty-eight years.
CSB: 3 Within these lay a large number of the disabled—blind, lame, and paralyzed. 5 One man was there who had been disabled for thirty-eight years.
Verses 3b–4 were added probably in the xx century as an explanation of why the people were at the pool.
Codex D only adds v 3b, and P66 and P75 omits vv 3b–4.
UBS gives the omission of the passage an A rating.