Tantum ergo sacramentum
Veneremur cernui
Et antiquum documentum
Novo cedat ritui;
Praestet fides supplementum
Sensuum defectui
Genitori Genitoque
Laus et iubilatio
Salus, honor, virtus quoque
Sit et benedictio;
Procedenti ab utroque
Compar sit laudatio
Amen
Tantum ergo was written by St. Thomas Aquinas & Gabriel Fauré.