“Indeed, Elijah is coming first and restores all things. And how is it written concerning the Son of Man, that He must suffer many things and be treated with contempt? 13 But I say to you that Elijah has also come, and they did to him whatever they wished, as it is written of him.”
Most commentators reference this to John the Baptist, but Verse 13 seems to say there was a writing concerning Elijah (or John) being mistreated. Is this writing found in the Old Testament?