The Crucifixion

It depicts Christ on the cross accompanied by the Virgin Mary, Saint John and Mary Magdalene at the foot of the cross. Three angels collect the Savior’s blood at the moment of his expiration.
It shows how El Greco uses the colors of the sky to evoke emotion and mood from the scene without having to paint a physically tortured body.
El Greco’s El Crucifixion is among one of the best artworks ever made using the theme; the other two of which are Giotto’s of the Arena Chapel and Grunewald’s of the Isenheim Altar.