Joh 13:28 None of those reclining at the table had come to know why he said this to him.
Joh 13:29 Since Judas kept the money-bag, some thought that Jesus was telling him, “Buy what we need for the festival,” or that he should give something to the poor ones.
Joh 13:30 That was why, after receiving the piece of bread, he immediately left. But it was night-time.
John was the only disciple who knew the real reason that Judas left them as this point. The reasons that went through the minds of the other disciples made sense to them, but they seemed ridiculous to John. Nobody goes out to do business at night, especially this night.
Isn’t it true that we all are in the habit of making up reasons for what happens, and most of those reasons turn out to be fanciful or ridiculous in hindsight?
We don’t have to understand it all. We just have to trust God through it all.