John records three separate post-resurrection appearances to the disciples. We read about the first two last week. They both centered around the disciple who doubted Jesus. This week his appearance draws our attention to disciple who had denied him.
The second Sunday of Easter (and the entire season of Easter, really) offers the preacher an opportunity to help hearers reflect on the significance of Jesus’ resurrection from the dead for their own lives. Thomas reminds us that there are only two responses to Easter. Either you believe it, confess it, and conform your entire life to it. Or you don’t.
In Luke 24:1-12 we don’t get a carefully constructed theology of the resurrection. The evangelist doesn’t work out all the implications of Easter for our life and faith. He doesn’t offer a logical argument for why we should believe Jesus rose physically from the dead. Instead, he simply describes what happened.