Go the way of all flesh
Definition 1 of 1
Pro Tip 1/3Archaic Tone
The phrase has an old-fashioned sound, suitable for historical or literary contexts. 
In his novel, the author described the knight as having gone the way of all flesh.
Pro Tip 2/3Metaphorical Use
It is often used metaphorically to imply the end of non-living things like traditions or technology. 
With the rise of e-books, it's feared that libraries may go the way of all flesh.
Pro Tip 3/3Irrelevance
It suggests not just death or decay but also becoming outdated or no longer useful. 
As streaming services gain popularity, DVDs are going the way of all flesh.