Chapters 1-6 set the scene for the infamous 10 plagues God would inflict upon Egypt as judgment for not letting His people go worship Him. In chapter 7, God gets down to business.
The first plague is the “Plague of Blood,” during which a lot of, most of, or all of–you be the judge–Egypt’s freshwater sources turn to blood (or did they?).
Check out the video for some interesting background on this plague and to see what my unbrushed hair looks like.