John Lightfoot on Mark 12:4

[At him they cast stones, and wounded him in the head.] I...They cast stones at the servant, and deriding him, made up the sum with him: saying, perhaps this, or some such thing to him, "Do you come for fruit and rent? Behold this fruit" (casting a stone at him) "behold another fruit," (casting another stone) and so many times together: and so they sent him away derided, and loaded with disgrace.

II. But be it that the word is to be translated as it is commonly rendered, "they wounded him in the head": then this way of stoning is thus distinguished from that whereby they were slain who were stoned by the Sanhedrim. That was called stone-casting: for it was the cast of a stone, indeed, but of one only, and that a very great one; and that upon the heart of the condemned person, when now he lay along upon his back. But this stoning was of many stones, thrown out of the hand through the air, striking him here and there and everywhere. The head of him that was stoned by the Sanhedrim was unhurt, and without any wound; but here, They cast stones at him, and wounded him in the head.