And when he had so said, he showed unto them his hands and his side. Then were the disciples glad, when they saw the Lord.
All Commentaries on John 20:20 Go To John 20
Irenaeus of Lyons
AD 202
In the same manner, therefore, as Christ did rise in the substance of flesh, and pointed out to His disciples the mark of the nails and the opening in His side.
then afterwards rising in the flesh, so that He even showed the print of the nails to His disciples,