Saint Thomas, who doubted that Jesus had risen from the dead, was convinced when Christ invited him to touch the wound in his side (John 20: 20-29). On the right the Franciscan Saint Anthony of Padua presents a donor, presumably the patron of the picture. In the left background, Saint Jerome is shown in the wilderness. The figures in the background right may be intended for other saints.
The National Gallery, Trafalgar Square, London WC2N 5DN