Let his days be few. There were Divine promises that "bloodthirsty and deceitful men" should not "live out half their days," which might naturally be regarded as justifying this wish (see Psalms 55:23; Proverbs 10:27; Ecclesiastes 7:17).
And let another take his office. τὴν ἐπισκοπὴν αὐτοῦ, LXX. Applied by St. Peter to Judas (Acts 1:20).