Then about 1375, Henry of Kalkar, the ''Visitator'' of the [[Carthusians|Carthusian Order]], divided the 150 Angelic Salutations into fifteen groups of ten, fifteen ''decades'', each decade beginning with an Our Father first, to certainly orient the prayers primarily to God. | Then about 1375, Henry of Kalkar, the ''Visitator'' of the [[Carthusians|Carthusian Order]], divided the 150 Angelic Salutations into fifteen groups of ten, fifteen ''decades'', each decade beginning with an Our Father first, to certainly orient the prayers primarily to God. |