en_tn_condensed/exo/07/09.md

When Pharaoh says to you, 'Do a miracle,' then you will say to Aaron, 'Take your staff and throw it down before Pharaoh, so that it may become a snake.'

"When Pharaoh tells you to do a miracle, then you will tell Aaron to take his staff and throw it down before Pharaoh, so that it may become a snake". Also, in the following verses miracles are mentioned several times. When Yahweh had Moses perform miracles, Pharaoh's men were able to copy these miracles. It is unknown how they were able to do this, but since it was not from Yahweh, they were probably done under some evil power.