All things do go a-courting, In earth, or sea, or air, God hath made nothing single But thee in His world so fair.

These lines lament solitude by contrasting the speaker’s isolation with the universal pairing observed in nature. “All things do go a-courting” casts the natural world as instinctively drawn toward union—on land, in the sea, and in the air—so that companionship appears not merely social but woven into creation. The final turn—“God hath made nothing single / But thee”—sharpens the emotional sting by framing the beloved (or addressed “thee”) as the lone exception in an otherwise harmoniously coupled world. The religious diction (“God hath”) intensifies the sense of cosmic unfairness, as if loneliness were a theological anomaly rather than a personal accident.