Of old, indeed, the Pagans spake proverbially of the Christians, “See how they love one another!” in a way of admiration. The contrary observation hath now prevailed, to the shame and stain of the profession of these latter days. What through dissensions and divisions amongst them who have any real interest in the privilege of sonship; what through an open, visible defect as to any relation unto God as a father, or unto the Lord Christ as an elder brother, in the most of them that are called Christians, we have lost the thing intended, and the name is become a term of reproach. But when iniquity abounds, love will wax cold. In the meantime, it were well if those who are brethren indeed could live as brethren, and love as brethren, and agree as brethren. The motives unto it are great and many.
– John Owen –
from Owen’s Exposition of Hebrews, volume 3, page 496; William H. Goold edition, printed byBanner of Truth Trust, 2009