Jacob of Sarug (451-521) was a prolific writer of the Syriac Church and was known as "the flute of the Holy Spirit and the harp of the believing church." Sebastian Brock gives the Syriac edition of six homilies written by Jacob: on the birth of our Lord; on the baptism of our Lord; on the Great Lent; on Palm Sunday; on Good Friday; on Easter Sunday. The text is based on an ancient manuscripts preserved in London and dated 609.