Catholic tradition has long venerated the remains of saints. Don’t confuse veneration, which is honoring a saint; with worship, which is given to God alone. After the death of a particularly saintly person, the physical remains and personal effects are preserved (relics). The vessel which holds such relics is called a reliquary. The ornate metal encasement which contains the hand (relic) of St. Teresa of Avila is a reliquary.
When this particular reliquary is rotated, palm side towards the viewer, it is possible to see her actual hand through some of the transparent areas. In the palm you see the mark of the wounds of Christ, referred to as stigmata.
When St. Teresa of Avila died the sisters in her convent buried her, hoping to preserve her within their order. Nine months later, when her coffin was opened, her body was found to be incorruptible (intact and undecayed). Before it was re-interred, her hand was removed. That is the source of the relic referred to in this story.
Relatively recently, 1939-1976, following the end of the Spanish Civil War, this relic of St Teresa was removed from the convent by General Franco, a devout Catholic. Rumor is he kept it in his sleeping quarters while he was ruler of Spain. It is said, that at the time of his death, he had it beside him on his pillow. After his death in 1976, the Discalced Carmelites of Ronda requested and were granted the return of the relic.
