The 10 plagues of Egypt

Why did god bestow 10 plagues upon the people of Egypt?

Is he not the all-powerful god, so why he not just set his people free?

Why did god kill the innocent 1^st born children?

What did they do?

                  1. The Nile River turns to blood

                  2. Frogs

                  3. Lice

                  4. Beasts

                  5. Livestock disease

                  6. Boils

                  7. Hail

                  8. Locusts

                  9. Darkness

         10. Death of the First BornBottom of Form