These days' Orthros liturgies (which in parishes is performed the previous night) are often referred to as the "Bridegroom Prayer", because of their theme of Christ as the Bridegroom of the Church, a theme expressed in the troparion that is solemnly chanted during them. On these days, an icon of the "Bridegroom" is placed on an analogion in the center of the temple, portraying Jesus wearing the purple robe of mockery and crowned with a crown of thorns (see Instruments of the Passion).