Exodus 8:9

8:9 Moses said to Pharaoh, “You may have the honor over me – when shall I pray for you, your servants, and your people, for the frogs to be removed from you and your houses, so that they will be left only in the Nile?”

Exodus 18:18

18:18 You will surely wear out, both you and these people who are with you, for this is too heavy a burden for you; you are not able to do it by yourself.