Is the Son eternal?

I'm puzzled as to how so many Oneness folk can say that the Son or the Sonship came into existance at bethlehem, and so they vhermently deny that the Son is eternal, yet in their next breath they'll say that the Son is Yahweh, although other Oneness folk dey this and claim that he's either just a manifestation of Yahweh or else he's a man in whom Yahweh indwells. What do the people in this room believe, do you hold to any of these three views or to another view?

For my part, as a God can' change being immutible; 'for I am God I change not' (Malachi 3:6), Yahweh God must therefore be both eternal and immutible, so if the Son is Yahweh God and I certainly do believe that, then he must be eternal and immutible. For that matter I apply every divine attribute to the Son, as I don't believe that the Son can exist as Yahweh and yet not possess every divine attributes.