In a 1995 lecture on Exodus 4, Dennis says: And G-d did X is a common Biblical way of saying X happened. For example, And G-d closed her womb is a Biblical way of saying she could no longer have children.
In the Biblical mind, G-d is always involved.
Second response to this problem — Pharoah deserved to be punished.
Three. Only by strengthening Pharoah’s heart does G-d enable Pharoah to have freedom of choice. If G-d wants you to do something, you have to be pretty strong to resist Him.