True, God shaped Zion — there’s no escaping it (5,7)
I believe the answer is:
event horizon
'no escaping it' is the definition.
I can't tell whether this defines the answer.
'true god shaped zion' is the wordplay.
'true' becomes 'even' (similar in meaning).
'god' becomes 'thor' (Thor is an example).
'shaped' indicates an anagram.
'zion' is an anagram of 'izon'.
'even'+'thor'+'izon'='EVENT HORIZON'
'there's' is the link.
Can you help me to learn more?
(Other definitions for event horizon that I've seen before include "(In astronomy) boundary of a black hole - no Heinz voter (anag)" , "black hole terminates here" , "Point of no return" , "(In astronomy) notional boundary of a black hole - viz not hereon (anag)" .)