He ordered two things to be offered, because as man consists of both body and soul, the Lord requires a double return from us, chastity and meekness, not only of the body, but also of the soul. Otherwise, man will be a dissembler and hypocrite, wearing the face of innocence to mask his hidden malice.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: ubi sup.