In John 20:19-31, after Jesus' resurrection, on the evening of the first day of the week, the disciples are gathered together behind locked doors out of fear. Suddenly, Jesus appears among them, despite the locked doors, and greets them with peace. He shows them his hands and side, proving his identity as the crucified and risen Lord. Thomas, one of the disciples, is not present during this encounter and expresses doubt about Jesus' resurrection until he sees and touches the wounds himself a week later when Jesus appears again, leading him to believe.