Either in the chair of Moses, or on the seat of judgment, in the great sanhedrim of the nation; or, as Aben Ezra paraphrases it, "in the seat of the scornful";
[and] speakest against thy brother;
even to pass sentence upon him, to put him to death for professing faith in Christ, ( Matthew 10:21 ) ;
thou slanderest thine own mother's son;
the apostles and disciples of Christ, who were their brethren and kinsmen according to the flesh; and even our Lord Jesus Christ himself, who was bone of their bone, and flesh of their flesh.