Scholars debate the precise meaning of this verse. One view, favored by commentators like Calvin and Barnes, is that God is describing Himself as being 'pressed under' the weight of Israel's sin, like a cart groaning under too many sheaves. Another view is that God is the one actively 'pressing' Israel down in judgment, like a heavy cart crushing everything in its path. Both interpretations lead to the same conclusion: a breaking point has been reached.