Parallel
Proverbs 18:19
Rahlfs Septuagint (1935) · Berean Standard Bible
ἀδελφὸς ὑπὸ ἀδελφοῦ βοηθούμενος ὡς πόλις ὀχυρὰ καὶ ὑψηλή ἰσχύει δὲ ὥσπερ τεθεμελιωμένον βασίλειον
An offended brother is harder to win than a fortified city, and disputes are like the bars of a castle.