Yes. From the Book The First Heretic by Aaron Dembski-Bowden, Chapter 18:
Argel Tal had never heard his sire speak so softly. ‘No. The Warmaster.’
The golden-skinned giant brushed his hands over his face, seemingly afflicted by a sudden weariness. ‘I do not know that title,’ he said. ‘Warmaster. An ugly word.’
Argel Tal chuckled in two voices. ‘Of course, forgive us, Lorgar. He will not be named that for some time. He is still merely Horus. When the vision ended in golden light, we could see nothing beyond the flare. But we heard your brother Horus. The machinery was breaking down, rattling and crashing. There was gunfire. The rush of the most powerful wind we’ve ever felt. And we heard Horus’s voice – shouting, defiant, enraged. It was as if he were there with us, seeing what we saw.’
‘Stop saying “we”. You are Argel Tal.’ ‘We are Argel Tal, yes. In forty-three years, Horus will speak four words that will save humanity or lead to its extinction. We know what those words are, Lorgar. Do you?’