An Offertory

1. (Christianity) An anthem formerly sung as part of the Roman Catholic Mass or during the corresponding part of the Anglican Communion. [from 14th c.] Offertory - Wikipedia
2. (Christianity) The part of the Eucharist service when offerings of bread and wine are placed on the altar and when any collection is taken; also, the money or other things collected. [from 15th c.]
3. (Christianity, historical) A linen or silken cloth anciently used in various ceremonies connected with the administration of the Eucharist.