John 9:41

If ye were blind Christ returns to His own meaning of -blind" or -they which see not" in John 9:39. -If ye were conscious of your own spiritual darkness, if ye yearned and strove to reach the light, yewould not have sin(see on John 15:22); for either ye would find the light, or, if ye failed, the failure would not lie at your door." For the construction comp. John 5:46; John 8:19; John 8:42; John 15:19; John 18:36.

therefore your sin remaineth Better, your sinabideth (see on John 1:33): -therefore" is an insertion, and must be omitted. -Ye profess to see: your sin in this false profession and in your consequent rejection of Me abideth." It was a hopeless case. They rejected Him because they did not know the truth about Him; and they would never learn the truth because they were fully persuaded that they were in possession of it. Those who confess their ignorance and contend against it, (1) cease to be responsible for it, (2) have a good prospect of being freed from it. Those who deny their ignorance and contend against instruction, (1) remain responsible for their ignorance, (2) have no prospect of ever being freed from it. Comp. John 3:36.