We know Jesus was resurrected and returned to His disciples. For this time period that He was back, the record states that He opened their understanding and expounded the scriptures to them. Things that they would not have been able to understand before His resurrection were taught them. He was there for forty more days, was He not? It seems to be a great period of learning for them, so I wonder why the writings that we have do not contain anything about what He taught when He came back. The scriptures seem oddly silent.