Presumably, God could foresee the cryptographic flaws of any algorithm, and could therefore design a simpler secure hash function than any human. In this case,

Presumably, God could foresee the cryptographic flaws of any algorithm, and could therefore design a simpler secure hash function than any human. In this case, "secure" means that there exists no algorithm to compute a preimage faster than brute force. This would be a "nothing up my sleeve" function, in contrast to something like https://en.wikipedia.org/wiki/Dual_EC_DRBG https://en.wikipedia.org/wiki/Dual_EC_DRBG that cryptographers would identify as sketchy. Hypothetical question: What is the Kolmogorov complexity of a secure 256-bit hash function?