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| movements = 6 | text_poet = anonymous | bible = | chorale = * }} | vocal = choir and soloists | instrumental = }} ''ドイツ語:Gott der Herr ist Sonn und Schild'' (God the Lord is sun and shield),〔 , is a church cantata by Johann Sebastian Bach. He composed it in Leipzig in 1725, his third year as Thomaskantor, for Reformation Day and led the first performance on 31 October 1725. The text was written by an unknown poet, who did not refer to the prescribed readings for the day. Bach began the libretto for the feast with a quotation from Psalm 84 and included two hymn stanzas, the first from Martin Rinckart's "ドイツ語:Nun danket alle Gott", associated with Reformation Day in Leipzig, as movement 3, and as the last movement the final stanza of Ludwig Helmbold's "ドイツ語:Nun laßt uns Gott dem Herren". Bach composed a work of "festive magnificence", structured in six movements, with an aria following the opening chorus, a pair of recitative and duet following the first chorale. He scored the work for three vocal soloists, a four-part choir, and a Baroque instrumental ensemble of two horns, timpani, two transverse flutes (added for a later performance), two oboes, strings and continuo. He achieved a unity within the structure by using the horns not only in the opening but also as obbligato instruments in the two chorales, the first time even playing the same motifs. Bach performed the cantata again, probably in 1730. He later reworked the music of the opening chorus and a duet again in his Missa in G major, BWV 236, and the music of an alto aria in his Missa in A major, BWV 234. == History and words == Bach composed the cantata in his third year as Thomaskantor in Leipzig. While he had written complete annual cycles for many occasions of the liturgical year the first two years in the position, he slowed down in the third. For the Reformation Day, he composed this new cantata, his first extant work for the occasion.〔 The prescribed readings for the feast day were from the Second Epistle to the Thessalonians, "be steadfast against adversaries" (), and from the Book of Revelation, fear God and honour him ().〔 The writer of the text – an unknown poet – was not concerned about the readings, and began with a quotation from Psalm 84 (). He included the first stanza from Martin Rinckart's hymn "ドイツ語:Nun danket alle Gott" and as the closing chorale the final stanza of Ludwig Helmbold's hymn "ドイツ語:Nun laßt uns Gott dem Herren".〔 According to the Bach scholar Klaus Hofmann, the first of these hymns was sung regularly after the sermon on Reformation Day in Leipzig.〔 Bach first performed the cantata on 31 October 1725. He repeated it again, probably in 1730, with minor changes in the scoring, doubling the oboes by flutes and assigning a flute as the obbligato instrument in the alto aria. 〔 He used the music of the opening chorus and the duet again in his Missa in G major, BWV 236, and the music of the alto aria in his Missa in A major, BWV 234.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gott der Herr ist Sonn und Schild, BWV 79」の詳細全文を読む スポンサード リンク
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