Adam Clarke on Proverbs 18:19

A brother offended is harder to be won than a strong city - Almost all the versions agree in the following reading: "A brother assisted by a brother, is like a fortified city; and their decisions are like the bars of a city." Coverdale is both plain and terse: "The unitie of brethren is stronger then a castell, and they that holde together are like the barre of a palace." The fable of the dying father, his sons, and the bundle of faggots, illustrates this proverb. Unity among brethren makes them invincible; small things grow great by concord. If we take the words according to the common version, we see them express what, alas! we know to be too generally true: that when brothers fall out, it is with extreme difficulty that they can be reconciled. And fraternal enmities are generally strong and inveterate.