Chapter 17 — Part II: The Sacraments — Confirmation
Section 15. The Appropriateness Of Chrism — Nor indeed could any other matter than that of chrism seem more appropriate to declare the effects of this Sacrament. Oil, by its nature rich, unctuous and fluid, expresses the fullness of grace, which, through the Holy Ghost, overflows and is poured into others from Christ the head, like the ointment that ran down upon the beard of Aaron, to the skirt of his garment; for God anointed him with the oil of gladness, above his fellows, and of his fullness we all have received.