God's Grandeur
shook foil
Hopkins explained this in a letter: gold foil when shaken gives off zigzag flashes, like forked lightning. He's describing how divine presence breaks through physical reality.
reck his rod
"Reck" = heed or care about. "Rod" = God's authority. Hopkins is asking why humans ignore divine power despite evidence all around them.
being shod
Wearing shoes cuts us off from direct contact with earth. The Industrial Revolution literally put barriers between humans and nature—Hopkins wrote this in 1877 during England's peak industrialization.