To suppose the Saints see all men and hear all thoughts is to give them something divine
If the Saints in glory are supposed to see everyone everywhere at once, hear their prayers, know their thoughts, give the help asked, and notice everything done in their honor, something divine has been given them.
The signs of honor in question then cease to be human cult and become divine cult.
Latin
XXXIV. Quod si quis supponat Sanctos in caelo cum Christo regnantes, posse simul omnes homines, in quacunque mundi parte positos, intueri, eorumque preces audire, & cogitationes nosse, atque etiam opem quam ab ipsis postulant ferre, & quaecunque fiunt in eorum honorem percipere atque agnoscere: hoc ipso putant Sanctis divinum quid tribui, & ea de quibus jam agimus honoris signa, non amplius ad humanum, sed ad divinum cultum pertinere.