All but Judas and John were martyred for their faith in Jesus Christ. They were not the same men after they saw the risen Christ. He said that he would not believe it was true that Jesus had risen unless he could see for himself and put his fingers into the nail wounds in Jesus' hands and his hand into the sword wound in His side. If Thomas was convinced that is pretty good evidence. To me the evidence is conclusive, and over and over again in the High Court I have secured the verdict on evidence not nearly so compelling.
Inference follows on evidence, and a truthful witness is always artless and disdains effect.
The Gospel evidence for the resurrection is of this class, and as a lawyer I accept it unreservedly as the testimony of truthful men to facts they were able to substantiate. The resurrection of Jesus Christ is an historical fact. It is the cornerstone of the Christian faith. It is the reason that we can have confidence when we face death because Jesus tasted death for us all and was victorious over it. That is truly the Easter message.