2. What happens when Sun has left? Who will take over? From the heat of high summer everything abruptly changes into clouds and rain.

 

In ancient Egypt the 'eye of Sun' (wedjat) was depicted like this:

We can imagine the eye perching at the top end of some kind of 'stem' (the trunk of a tree?). Has the eye got there slowly by way of resting in the top of a tree while it was growing? Or is it an egg from a bird who has flown there?

 

Wedjat seems to have meant 'the whole, or uprighted', a meaning agreeing with the situation with Sun at 'zenith'. I have used pictures and information from Wilkinson (a.a.).

 

The 'tearline' drawn from the sun eye resembles the sign in the face of the cheetah, significantly a kind of quickly running cat: