To avoid compounding the felony, so to speak, biblical characters use BRK as a euphemism for Curse or Blaspheme. See the accusation against Naboth, that he had "blasphemed" God and the king (1 Kings 21:13). Job's wife does the same in Job 2:9, telling her husband "curse God and die".
The context makes this euphemistic substitution quite transparent.
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