He remembered the magnificent voice he had heard in the lobby of the strike meeting, and he imagined a giant of a man, with a rich mane of hair, perhaps just turning gray, with bold, broad features of an ineffable benevolence, something vaguely like the countenance of God the Father.
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They were mystical experiences and were ineffable (incapable of being described in words).
She had been housed with the captain while the rest of them had gone on to entertain the commander; the doctor had reserved her, implying to the commander that she was not a virgin like the others, who would offer him the salubrious and then other ineffable effects of his taking their maidenhood, which to a soldier is like an amulet of life and rebirth.