According to the passages we read, it is possible for a good man to have his steps order by the Lord while at the same time his foot slips and he falls. But the difference between a good man versus and evil one is that he never stays down. An evil man, on the hand, never repents. He continues the same course.
Abrasion is defined as the erosion that occurs when particles scrape against each other. The enormous weight of the glacier, along with rocks and sediment plucked up and clinging to its belly scratch and carve the rock surface below. It's almost as if the moving glacier is sanding the rocks with abrasive sandpaper.
Lastly, the movement of glaciers can result in erosion through abrasion. Regardless of how the sediment and rock come to be carried along by the glacier, this material will be transported until it is finally deposited. During this time, some of these pieces will be carried along at the base of the glacier.