1:18 While he [was] yet speaking, there came also another, and said, Thy {z} sons and thy daughters [were] eating and drinking wine in their eldest brother's house:

(z) This last plague declares that when one plague is past which seems hard to bear, God can send us another far more grievous, to try his and teach them obedience.

1:13-19 Satan brought Job's troubles upon him on the day that his children began their course of feasting. The troubles all came upon Job at once; while one messenger of evil tidings was speaking, another followed. His dearest and most valuable possessions were his ten children; news is brought him that they are killed. They were taken away when he had most need of them to comfort him under other losses. In God only have we a help present at all times.