Parallel
Proverbs 20:2
Rahlfs Septuagint (1935) · Berean Standard Bible
οὐ διαφέρει ἀπειλὴ βασιλέως θυμοῦ λέοντος ὁ δὲ παροξύνων αὐτὸν ἁμαρτάνει εἰς τὴν ἑαυτοῦ ψυχήν
The terror of a king is like the roar of a lion; whoever provokes him forfeits his own life (note: Literally sins against his own soul).