How old is the depiction of the Christian God as an old man?

by Vladith
Searocksandtrees

hi! not discouraging anyone from contributing more info, but FYI, there have been a couple of similar posts; check out previous responses here

How did the Christian God come to be visualized as an old guy with a beard and long robes?

Why did Michelangelo paint God as an old man with a beard?