John 12:36

‘These things Jesus spoke, and he departed and hid himself from them'.

He had given them their opportunity and now that opportunity was over earlier than they might have thought. That His action was deliberate is stressed - He  hid  Himself. It may well have been that He was very tired with the pressures that were building up on Him and could endure the crowds no longer, or it may be that there were ideas building up among the crowds which could be dangerous before His time was come, or it may simply indicate that He did not want to be betrayed before His time. Whichever way it was many had had their last opportunity, for they had failed to believe. They probably thought that they would have many more chances, but they were wrong. We never know when our last chance may come.