Exodus 10:7, commentary and pictures

The men who confront Pharaoh are not household attendants but his rulers and counselors under him, called servants because they are subordinate to him. They speak after Moses and Aaron have warned that locusts will cover the land and eat whatever the hail has left. In that moment they ask how long Moses shall be a snare to them, urge Pharaoh to let the men go that they may serve the LORD their God, and declare that Egypt is destroyed, questioning whether he does not yet know it.

Their urgency rests on ruin already suffered through the plagues. They have sustained great loss by the death of cattle and livestock and by loss of people, and Egypt has been nearly ruined by lightning. Hail mingled with fire has broken down forests and destroyed fruit and crops and nearly all grain, leaving everything in a ruinous condition and wiping out all that had been gained through Hebrew labor.

The appeal belongs to the locust plague, which was directed against the worship of Serapis, who was believed to protect the land from locusts. The locusts came in clouds that blighted field and forest at Moses' command and withdrew only at his bidding, exposing the helplessness of Serapis. Like the other plagues of steadily increasing power and severity, this plague was designed to destroy confidence in the power and protection of idols, to teach the folly of trusting any protection besides Jehovah the God of Israel, to assert His supremacy, and to demand Israel's deliverance from bondage.