And by the morning when it breathes.
And the morn as it breathes
and the morning when it extends
And the morning when it brightens
And the morning/daybreak when/if (it) breathed in or out (began)
And the breath of the dawn
And by oath of the morning when it takes birth
And the dawn as it begins to breathe
And by the morning when its light dawns
And the dawn as it begins to breathe (and brightens up)
And by the dawn as it brightens