What aspects of daily life or current events in the mid 1700's inspired Jonathan Edwards to use the specific metaphors of the bent bow and the arrow

What aspects of daily life or current events in the mid 1700's inspired Jonathan Edwards to use the specific metaphors of the bent bow and the arrow in the heart, the abhorrent spider (representing the sinner) being tossed in the fire, and the weight of lead dragging the sinner into the bottomless gulf to instill the most expediency in his specific audience?