My hand recoiled with a mere touch, O Lord! You left a blazing thunderbolt.

This couplet describes an overwhelming experience, perhaps a spiritual or emotional one. The poet says that a mere touch made their hands slip, as if they were burnt. They then exclaim, "Oh Lord! You left behind a burning thunderbolt!" This conveys the intense, powerful, and lasting impact of that encounter. It suggests that the presence was so potent and fiery that it left a profound and unshakeable impression, a powerful energy that continues to resonate, even after the source departed. It speaks of a deep, transformative, and intensely felt connection.