Exodus 7:15

7:15 Go to Pharaoh in the morning when he goes out to the water. Position yourself to meet him by the edge of the Nile, and take in your hand the staff that was turned into a snake.

Exodus 8:20

The Fourth Blow: Flies

8:20 The Lord said to Moses, “Get up early in the morning and position yourself before Pharaoh as he goes out to the water, and tell him, ‘Thus says the Lord, “Release my people that they may serve me!