Why not the dark veil, when the covenant of the eyes was still moist?

This couplet is a deep meditation on broken promises and the unpredictability of fate. The black cloud and the white wind represent natural cycles or expected occurrences. But the poet wonders why these natural laws aren't followed, suggesting that the mere memory or promise (the 'moisture of the eyes') was enough to destabilize everything. It speaks to a fragile emotional reality where a single promise can hold more power than the entire cosmos.