This verb means to be enraged or mad with fury, often directed at someone. In Acts 26:11, Paul recalls his pre-conversion zeal: "I was so enraged at them that I even pursued them to foreign cities." The present participle suggests ongoing fury—he was constantly enraged, driven by fanatical anger to persecute Christians beyond Judea. The verb captures the intensity of his opposition, a madness that later becomes a testimony to the transforming power of encountering Christ.