Thomas, one of the twelve, called the Twin, was not with them when Jesus came. He was the only disciple absent; on his return he heard what had happened but refused to believe it. The Lord came a second time; he offered his side for the disbelieving disciple to touch, held out his hands, and showing the scars of his wounds, healed the wound of his disbelief.
Dearly beloved, what do you see in these events? Do you really believe that it was by chance that this chosen disciple was absent, then came and heard, heard and doubted, doubted and touched, touched and believed? It was not by chance but in God’s providence. In a marvellous way God’s mercy arranged that the disbelieving disciple, in touching the wounds of his master’s body, should heal our wounds of disbelief. The disbelief of Thomas has done more for our faith than the faith of the other disciples. As he touches Christ and is won over to belief, every doubt is cast aside and our faith is strengthened. So the disciple who doubted, then felt Christ’s wounds, becomes a witness to the reality of the resurrection.
-- Pope Saint Gregory the Great From a HomilyOn Saint Thomas the Apostle
