Kempten, Nördlingen, Heilbronn, Reutlingen, Isny, St. Gallen, Weißenburg and Windsheim). Main Portal The two parts of the main portal include on the middle column a sandstone figure of King David with his harp, who greets visitors to the church with a psalm on a scroll, and draws attention to the importance of music in the Protestant church: "The Lord will guard your going out and coming in From this time forth and forevermore. " Psalm 121 verse 8 On the inside of the portal an angel stands with an open book, warning visitors as they leave to heed God's word: "Blessed are they that hear the word of God and keep it" The interior The interior differs from a medieval cathedral in that there is no plastering or painting. Pillars and walls are similarly bare, and the only colour comes from the glass painting. Fittings The 36 Windows As with Gothic cathedrals, the colourfully designed window panes are an integral component of the construction. The windows originate from nine well-known studios across various cities of the then German empire. All 36 windows are created in the historism style. The main window in the apse was donated by the last German imperial couple, Wilhelm II and his wife Auguste Victoria. This is why the chancel is also known as the Emperor's Chorus. The seven angel's heads in the three middle windows are portraits of the Emperor's children. Wilhelm II had this to say on this representation of his children: "Before they were seven little rascals, today they are angels." Ground floor 1 Death bed of a Christian woman, which is a symbol of the virtue of Hope 2 The sacrifice of Isaac by his father Abraham is a symbol of the virtue of Faith 3 The work of deaconesses is a symbol of the virtue of Love 4 The burial of Jesus 5 `Protest at Speyer' (1529) with John of Saxony and Jakob Sturm in 1529, the main reason for the construction of the church. 6 `Defiant Worms' (1521) with Georg von Frundsberg and Landgrave Philip of Hesse reminds of Luther's appearance before the Diet of Worms in 1521 7 Whitsun 8 Twelve-year-old Jesus in the Temple links with the scholarliness of Melanchthon in the neighbouring window 9 `Confessing Augsburg' (1530) with Philip Melanchthon and Chancellor Dr. Christian Baier reminds of the Confessio Augustana of 1530 10 `Sorrowing Magdeburg' (1631) with