When, in times of old, Balaam spoke these things in parables, he was not acknowledged; and now, when Christ has appeared and fulfilled them, He was not believed. Wherefore [Balaam], foreseeing this, and wondering at it, exclaimed, “Alas! Alas! Who shall live when God brings these things to pass?”
Source: Fragments from the Lost Writings of Irenaeus (New Advent)