Scripture: one God adored and served; the Roman reply of latria and dulia
But to return to Holy Scripture: not only does it contain no command or example concerning the worship of angels or of the dead saints, but it often teaches that one God is to be adored and that he alone is to be served. So no religious worship at all is to be given either to angels or to the saints who have died in Christ.
The teachers of the Roman school reply that Scripture forbids us only to give creatures that supreme and absolute worship by which someone is worshiped as first principle and last end, the worship for which they have reserved the name latria. It does not, they say, forbid us to show God's servants and friends, such as the angels and the spirits of the just received into heavenly glory, that lower religious worship which they call dulia.
Latin
LXXI. Sed ut ad Sacram Scripturam redeamus, non solum in ea nullum praeceptum aut exemplum de Angelorum, sive de Sanctorum mortuorum cultu reperitur, sed saepius ipsa docet unum Deum adorandum, & illi soli serviendum esse: adeoque nec Angelis, nec Sanctis in Christo defunctis religiosum ullum cultum esse deferendum. Respondent Scholae Romanae Doctores scripturam solum prohibere ne creaturis deferamus cultum illum summum atque absolutum, quo aliquis colitur, tanquam primum principium, atque ultimus finis, cui cultui Latriae nomen appropriaverunt, non vero prohibitum esse Dei Ministris & amicis, quales sunt Angeli, & justorum Spiritus in gloriam caelestem recepti, inferiorem illum religionis cultum quem ipsi Duliam appellant, exhibere.