|“|| Jesus told his disciples everything.
John 15:15 Henceforth I call you not servants; for the servant knoweth not what his lord doeth: but I have called you friends; for all things that I have heard of my Father I have made known unto you.
There were some things that Jesus didn't tell them.
John 16:12 I have yet many things to say unto you, but ye cannot bear them now.
John 15:15 does not say that "Jesus told his disciples everything." The critic is simply misreading the passage. What Jesus actually said was that He'd told His disciples everything His Father had told Him. Thus, things not told to Jesus by His Father, such as things He'd learned from His own experience (possibly about the disciples because of His time with them) would not have been included, and could very well be what He was referring to in John 16:12. Thus there is no contradiction, simply faulty reading comprehension on the part of the critic.
- Marlow, Andy (2009). Contradictions in the Bible. Project Reason.