Temples to Selecus

[Cheexsta]

Seleucus was indeed worshipped as a god, possibly even in his own lifetime (as were Alexander, Ptolemy, Lysimachus, etc etc). Most of the diadochoi were worshipped as gods at some point (even Antiochus III's wife, Laodike, had a cult), except in Makedonia itself - eg Demetrius Poliorketes in Delos but not in Makedonia, and it seems that Ptolemy I was seen as a god possibly even as early as his conquest of Rhodos.

It should be noted that there doesn't seem to be any evidence that any of them (except maybe Alexander) even wanted to be worshipped as gods. Most of the time it was probably a mixture of flattery and a way of "cementing" a particular king's regime.

This is all from memory, though. There are some interesting notes here from a lecture I attended on this topic a while back, if you don't mind a bit of reading.

[Vorian]

The Egyptian priests had to find a way to keep their status witht he change of management. By proclaiming Alexander son of Amon-Zeus they achieven two things:
a) Made sure that Alexander wouldn't move them aside with the Greek religion
b)Ensured that the population accepted the "liberation" from the Persians by the descendant of Pharaohs.

I have also read another story however, that when the priest came to greet Alexander he wanted to say "Ω Παιδίον", which means child (something like "my child" from modern priests) but not knowing Greek well enough he made a mistake saying "Ω Παιδιός" which Alexander's followers heard as " Ω παι Διός", which means "Son of Zeus"

I doubt if it's true but it's funny. A deity created by wrong spelling.

[gran_guitarra]

Alexander was never overtly proclaimed to be the son of Zeus. The oracle's message was INTERPRETED that way, but they never said, Dude, um, your the son of a God.

The oracle told Alexander to sacrifice a bull in honor of his father at the Temple of Zeus. People interpreted this to mean that he was the son of Zeus.