Proverbs 18:19

Offended, to wit, by his brother's unkindness or injury. Is harder to be won; or, is stronger, which is sufficiently understood by the mention of a strong city, to which he is compared; such ellipses being frequent in the Hebrew, as hath been noted before. Than a strong city; which is hardly to be conquered. Like the bars of a castle; which are very strong, and not to be broken, and make the castle strong, and hardly to be won. The truth of this assertion is confirmed by the testimony of Aristotle and other learned authors, who affirm the same fixing; and the reason of it is evident, because the nearness of the relation greatly heightens the provocation, and love abused frequently turns to extreme hatred.